Personality Traits in Relation to Cognitive Disengagement Syndrome and ADHD Inattention in Two Samples of Children.

OBJECTIVE: Cognitive disengagement syndrome (CDS; previously referred to as sluggish cognitive tempo) is a set of behaviors, including excessive mind-wandering, mental fogginess, and hypoactivity, that are separate from ADHD inattentive (ADHD-IN) symptoms and linked to functional outcomes. However, CDS and ADHD-IN symptoms are strongly associated, and our understanding of whether personality correlates are similarly or differentially linked to CDS and ADHD-IN is limited. The objective of the current study was to examine personality correlates of CDS and ADHD-IN symptoms across two independent samples of school-aged youth. METHOD: Study 1 included 207 school-aged children (ages 7-11; 63% male; 87.9% White) with or without teacher-reported elevations in CDS. Study 2 included 263 school-aged children (ages 8-12; 58% male; 75.3% White) with the full range of CDS symptomatology. Parents and teachers completed ratings of ADHD-IN and CDS, and parents also reported on their child's personality dimensions. RESULTS: Across two samples and controlling for demographic characteristics as well as ADHD-IN symptoms and other personality traits, higher levels of FFFS-fear/shyness were uniquely associated with higher levels of parent- and teacher-reported CDS symptoms. In most models, lower levels of BAS-drive were also uniquely associated with higher levels of CDS. In contrast, when controlling for demographic characteristics and CDS symptoms, higher levels of BAS-impulsivity/fun-seeking were uniquely associated with higher levels of parent- and teacher-reported ADHD-IN symptoms. DISCUSSION: The findings provide the clearest evidence to date that personality dimensions are differentially associated with ADHD-IN and CDS symptoms in children, further underscoring CDS as a distinct construct from ADHD-IN.

Preliminary examination of ADHD inattentive and cognitive disengagement syndrome symptoms in relation to probe-caught mind-wandering during a sustained attention to response task.

OBJECTIVE: The role of mind-wandering- periods of internally-directed distractibility - among patients with attention-deficit/hyperactivity disorder (ADHD) has recently garnered attention, though few studies have assessed mind-wandering using thought probes during a sustained attention to response task (SART) or examined the possible role of cognitive disengagement syndrome (CDS) symptoms. We examined whether parent- and/or teacher-reported ADHD-inattentive (ADHD-IN) or CDS symptoms were independently associated with probe-caught mind-wandering. METHODS: Fifty-four children (ages 9-12; 35.2% female) completed a SART with thought probes inquiring about various on- and off-task thoughts, including mind-wandering and distraction. Questionnaires provided information on demographics, medication treatment, and parent- and teacher-reported ADHD-IN and CDS symptoms. Regression models were estimated separately by informant to examine whether ADHD-IN or CDS symptoms were uniquely associated with mind-wandering or distraction frequency during the SART. RESULTS: Higher teacher-reported CDS ratings, but not ADHD-IN ratings, were uniquely associated with more probe-caught mind-wandering. No significant findings related to parent-reported symptoms or probe-caught distraction were observed. CONCLUSIONS: These preliminary findings add to an emerging body of work pointing to CDS as more consistently or strongly associated than ADHD-IN with mind-wandering. Theoretical and clinical implications are discussed.

A Multi-Method Examination of Peer Functioning in Children with and without Cognitive Disengagement Syndrome.

OBJECTIVE: Cognitive disengagement syndrome (CDS) includes excessive daydreaming, mental confusion, and hypoactive behaviors that are distinct from attention-deficit/hyperactivity disorder inattentive (ADHD-IN) symptoms. A growing number of studies indicate that CDS symptoms may be associated with ratings of social withdrawal. However, it is important to examine this association in children specifically recruited for the presence or absence of CDS, and to incorporate multiple methods including direct observations of peer interactions. The current study builds on previous research by recruiting children with and without clinically elevated CDS symptoms and using a multi-method, multi-informant design including recess observations and parent, teacher, and child rating scales. METHOD: Participants were 207 children in grades 2-5 (63.3% male), including 103 with CDS and 104 without CDS, closely matched on grade and sex. RESULTS: Controlling for family income, medication status, internalizing symptoms, and ADHD-IN severity, children with CDS were observed during recess to spend more time alone or engaging in parallel play, as well as less time involved in direct social interactions, than children without CDS. Children with CDS were also rated by teachers as being more asocial, shy, and socially disinterested than children without CDS. Although children with and without CDS did not differ on parent- or self-report ratings of shyness or social disinterest, children with CDS rated themselves as lonelier than children without CDS. CONCLUSIONS: Findings indicate that children with CDS have a distinct profile of peer functioning and point to the potential importance of targeting withdrawal in interventions for youth with elevated CDS symptoms.

Cognitive disengagement syndrome (sluggish cognitive tempo) and medical conditions: a systematic review and call for future research.

Cognitive disengagement syndrome (CDS, previously referred to as sluggish cognitive tempo) is a unique set of symptoms distinct from ADHD inattentive symptoms that appear to be independently associated with neuropsychological and psychosocial outcomes in community and ADHD-specific samples of youth. However, our understanding of CDS in individuals with chronic or complex medical conditions is limited. The current systematic review is the first to summarize the literature on CDS prevalence rates and associations with neurocognitive and functional outcomes in youth with medical conditions, and to discuss areas of future research to guide clinical intervention. We conducted literature searches across four major databases and included studies assessing prevalence estimates, associations with neuropsychological and/or psychosocial functioning, or predictors of CDS in individuals with chronic or complex medical conditions. Twenty-five studies were identified and retained. Fifteen of sixteen studies reported elevations in CDS symptoms, though findings were mixed in studies comparing mean differences to typically developing youth. Seven studies provided inconsistent evidence for CDS being associated with neuropsychological or academic functioning, with six studies demonstrating consistent effects on psychosocial functioning. Finally, nine studies identified biological and sociodemographic factors associated with CDS, though almost all await replication. CDS symptoms are significantly elevated in youth with medical conditions and appear to be particularly linked with psychosocial functioning. Future research is needed to identify prevalence of CDS across a range of medical conditions, examine associations with neuropsychological and psychosocial functioning, and examine whether CDS impacts self-management.

Physical and Extracurricular Activity in Adolescents With and Without ADHD: Examining Group Differences and the Role of Cognitive Disengagement Syndrome Symptoms.

OBJECTIVE: This study examined extracurricular and physical activity related to ADHD (diagnosis and symptoms) and cognitive disengagement syndrome (CDS) symptoms. METHODS: Participants were 302 adolescents (ages 12-14) with and without ADHD and primary caregivers. ADHD diagnosis was determined with parent interview. Questionnaires provided information on parent-reported demographic characteristics, ADHD symptoms, and extracurricular activity involvement; and adolescent-reported ADHD and CDS symptoms and indices of physical activity. RESULTS: Although ADHD diagnosis and symptom dimensions were correlated with less extracurricular and physical activity involvement, CDS symptoms were most often independently associated with these outcomes. Females and adolescents from lower income homes also often had less involvement in extracurricular and physical activity. CONCLUSIONS: Findings point to the need for more research in this area, careful assessment of risk factors (i.e., CDS symptoms, economic burden), and interventions that address inactivity in adolescents with ADHD, including those that address inequity related to income and sex.

Report of a Work Group on Sluggish Cognitive Tempo: Key Research Directions and a Consensus Change in Terminology to Cognitive Disengagement Syndrome.

OBJECTIVE: The aim of this work was 2-fold: (1) to evaluate current knowledge and identify key directions in the study of sluggish cognitive tempo (SCT); and (2) to arrive at a consensus change in terminology for the construct that reflects the current science and may be more acceptable to researchers, clinicians, caregivers, and patients. METHOD: An international Work Group was convened that, in early 2021, compiled an online archive of all research studies on SCT and summarized the current state of knowledge, noted methodological issues, and highlighted future directions, and met virtually on 10 occasions in 2021 to discuss these topics and terminology. RESULTS: Major progress has been made over the last decade in advancing our understanding of SCT across the following domains of inquiry: construct measurement and stability; genetic, environmental, pathophysiologic, and neuropsychological correlates; comorbid conditions; functional impairments; and psychosocial and medication interventions. Findings across these domains are summarized, and potential avenues to pursue in the next generation of SCT-related research are proposed. Following repeated discussions on terminology, the Work Group selected "cognitive disengagement syndrome" (CDS) to replace "SCT" as the name for this construct. This term was deemed to best satisfy considerations that should apply when selecting terms for a condition or syndrome, as it does not overlap with established terms for other constructs, is not offensive, and reflects the current state of the science. CONCLUSION: It is evident that CDS (SCT) has reached the threshold of recognition as a distinct syndrome. Much work remains to further clarify its nature (eg, transdiagnostic factor, separate disorder, diagnostic specifier), etiologies, demographic factors, relations to other psychopathologies, and linkages to specific domains of functional impairment. Investigators are needed with interests and expertise spanning basic, clinical, and translational research to advance our understanding and to improve the lives of individuals with this unique syndrome.

Sluggish Cognitive Tempo (Cognitive Disengagement Syndrome) and Academic Functioning: A Systematic Review and Agenda for Future Research.

The past two decades have witnessed substantial interest in sluggish cognitive tempo (SCT), a set of symptoms (e.g., excessive daydreaming, mental confusion, slowed behavior) distinct from attention-deficit/hyperactivity disorder (ADHD) and other psychopathology symptoms. Despite evidence linking SCT to a range of functional outcomes, findings for academic functioning are unclear. The current review summarizes the literature on SCT and academic functioning and offers an agenda for future research. A systematic review was conducted to identify studies assessing SCT and academic outcomes, including academic impairments and performance, in childhood, adolescence, and young adulthood. Sixty studies were retained (53 cross-sectional, 7 longitudinal) from 44 separate samples, with the majority (n = 32, 53%) assessing global ratings of academic impairment and fewer measuring specific academic domains or standardized achievement test scores. Findings were generally consistent in showing SCT to be correlated with global ratings of academic impairment, lower grades, and inconsistently associated with poorer math and reading scores. Findings were more mixed when controlling for ADHD symptoms, intelligence, and/or demographic factors. Overall, SCT is associated with poorer academic functioning, although inconsistencies and key limitations are common across studies. Ten directions for future research are offered to advance understanding of how SCT may be associated with or impact academic functioning.

Prospective association between evening circadian preference and academic functioning in adolescents: the role of daytime sleepiness.

BACKGROUND: There is growing evidence for the role of circadian factors in adolescents' sleep and academic adjustment, with greater evening preference being linked to poorer academic functioning. However, studies have yet to evaluate this association prospectively in adolescence, nor have studies examined daytime sleepiness as a putative mechanism linking evening preference to poor academic functioning. The current study used a multi-informant design to test the prospective association of evening circadian preference, daytime sleepiness, and academic functioning (e.g., global academic impairment and grades) across 2 years in adolescence. As evening circadian preference, sleepiness, and academic problems are elevated in adolescents with ADHD, we used a sample enriched for adolescents with ADHD and explored whether ADHD moderated effects. METHOD: Participants were 302 adolescents (Mage = 13.17 years; 44.7% female; 81.8% White; 52% with ADHD). In the fall of eighth grade, adolescents reported on their circadian preference, and in the fall of ninth grade, adolescents and parents completed ratings of daytime sleepiness. In the middle of 10th grade, parents and teachers reported on adolescents' academic impairment and at the end of 10th grade, adolescents' grade point average (GPA) was obtained from school records. RESULTS: Above and beyond covariates (e.g., adolescent sex, ADHD status, medication, sleep duration) and baseline academic impairment, greater self-reported evening preference in 8th grade predicted increased parent ratings of academic impairment in 10th grade indirectly via adolescent and parent ratings of daytime sleepiness in 9th grade. Furthermore, evening preference in 8th grade predicted greater teacher ratings of academic impairment and lower average GPA in 10th grade via parent ratings of daytime sleepiness in 9th grade, controlling for covariates and baseline GPA. ADHD status did not moderate indirect effects. CONCLUSION: Findings underscore daytime sleepiness as a possible intervening mechanism linking evening preference to poor academic functioning across adolescence. Intervention studies are needed to evaluate whether targeting circadian preference and sleepiness improves academic functioning in adolescents.

Cognitive Disengagement Syndrome (Sluggish Cognitive Tempo) and Social Withdrawal: Advancing a Conceptual Model to Guide Future Research.

OBJECTIVE: Cognitive disengagement syndrome (CDS, previously referred to as "sluggish cognitive tempo") is a set of symptoms defined by excessive mind-wandering, mental confusion, and slowed behaviors separable from ADHD inattention. METHOD: Of the studies examining CDS in relation to psychosocial outcomes, one of the most established correlates of CDS is social withdrawal. However, studies have yet to test mechanisms or moderators of the link between CDS and social withdrawal. RESULTS: As a parallel body of literature exists in developmental psychopathology on predictors and outcomes of social withdrawal, this review merges these literatures to identify themes and advance a conceptual model on mechanisms (e.g., task-unrelated thought, poorer social skills, social anxiety) and moderators (e.g., behavioral inhibition, sex, parenting) of the CDS and social withdrawal link. CONCLUSION: This model provides researchers and clinicians with testable hypotheses to better understand the link between CDS and social withdrawal and to identify treatment targets to improve the social engagement of youth with CDS.

Rumination as a Mechanism of the Longitudinal Association Between COVID-19-Related Stress and Internalizing Symptoms in Adolescents.

The current prospective longitudinal study evaluated brooding rumination as an intervening mechanism of the association between COVID-19-related stress and internalizing symptoms during the first year of the pandemic. Attention-deficit/hyperactivity disorder (ADHD) status and adolescent sex were tested as moderators of the indirect effect. Adolescents with and without ADHD (N = 238; M age = 16.74) completed rating scales of COVID-19 stress and both adolescents and parents completed ratings scales of internalizing symptoms in May/June 2020 (T1). In October/November 2020 (T2), adolescents reported on their brooding rumination. Adolescents and parents reported on internalizing symptoms again in March/April 2021 (T3). Covariates included participant characteristics and baseline symptoms. T1 self-reported COVID-19-related stress was associated with increased T3 self-reported anxiety (ab = 0.10), self-reported depression (ab = 0.07), and parent-reported depression (ab = 0.09) via T2 brooding rumination. The indirect effect did not differ for adolescents with and without ADHD or for female and male adolescents. Brooding rumination may be one mechanism to target to promote the mental health adjustment of adolescents during periods of high stress of the COVID-19 pandemic and future stressors.

Prospective Associations Between Fears of Negative Evaluation, Fears of Positive Evaluation, and Social Anxiety Symptoms in Adolescence.

Fear of negative evaluation (FNE) and fear of positive evaluation (FPE) are independently associated with social anxiety symptoms in adolescence, though no study has tested these relations longitudinally. The current study examined longitudinal relations between FNE, FPE, and social anxiety symptoms using a multi-informant design, in addition to testing adolescent gender as a moderator. Adolescents (N = 113; Mage = 12.39; Girls = 44.2%) and parents completed measures of FNE, FPE, and two ratings of social anxiety approximately 6 months apart. FNE and FPE demonstrated significant stability over time, but neither predicted change in the other construct. Adolescent and parent-reported FNE, but not FPE, predicted increased social anxiety symptoms. Adolescent report of social anxiety symptoms predicted increased FPE over time, whereas parent report of social anxiety symptoms predicted increased FNE. Contrary to hypothesis, gender did not moderate any of the pathways in the model. Findings provide the first evidence that FNE may function as a risk factor for increased social anxiety in adolescence.

Longitudinal Association of Sluggish Cognitive Tempo with Depression in Adolescents and the Possible Role of Peer Victimization.

It is unknown whether sluggish cognitive tempo (SCT) is prospectively associated with depression in adolescence, and possible processes linking SCT to depression remain unexamined. Using a longitudinal study with three timepoints over a two-year period, the current study tested the indirect effects of SCT on depression via peer victimization, specifically physical, relational, and verbal victimization. Participants were 302 adolescents (Mage = 13.17 years; 44.7% female participants; 81.8% White; 52% with ADHD). In the fall of 8th grade, adolescents and parents completed measures of adolescents' SCT and ADHD symptoms. Adolescents completed a measure of peer victimization in spring of 8th grade and a measure of depressive symptoms in 10th grade. Models examining indirect effects were conducted with and without control of baseline ADHD and/or depressive symptoms. Across analyses, adolescent and parent ratings of SCT symptoms uniquely predicted greater depressive symptoms two years later when controlling for adolescent sex, study site, and either 8th grade depressive or ADHD symptoms. Further, adolescents' self-reported 8th grade SCT symptoms predicted 10th grade depressive symptoms via verbal victimization when controlling for 8th grade ADHD symptoms, but not in analyses incorporating 8th grade depressive symptoms. Findings underscore the predictive association of SCT on depressive symptoms, the possible role of adverse peer relationships as a mechanism linking SCT to depression, and the importance of considering ADHD and depressive symptoms in research on longitudinal correlates of SCT.

A multi-method examination of sluggish cognitive tempo in relation to adolescent sleep, daytime sleepiness, and circadian preference.

BACKGROUND: The field's understanding of the association between sluggish cognitive tempo (SCT) and sleep is severely limited by the lack of multi-method and multi-informant research designs that move beyond global ratings, often focused on a limited number of sleep-related domains, such as daytime sleepiness. The current study begins to address these limitations by using actigraphy, daily sleep diary, and self- and parent-report global ratings of sleep in adolescents, a developmental period marked by changes in SCT, sleep, and circadian function. As SCT and sleep are also associated with ADHD symptoms, we tested these associations in a sample of adolescents with and without ADHD. METHODS: Adolescents (N = 302; M age = 13.17 years, 44.7% female) with (n = 162) and without ADHD (n = 140) and parents completed global ratings of sleep and daytime sleepiness, and adolescents completed a measure of circadian preference. Adolescents also wore actigraphs for approximately two weeks, during which daily diaries were completed. RESULTS: Above and beyond demographic characteristics (i.e., sex, race, and family income), pubertal development, medication use, and ADHD group status, adolescents' self-reported SCT symptoms were uniquely associated with shorter sleep duration and later sleep onset per both actigraphy and daily diary. SCT symptoms were also uniquely associated with longer sleep onset latency and poorer overall sleep (per daily diary), more sleep/wake problems and daytime sleepiness (per adolescent rating), more difficulties initiating and maintaining sleep (per parent rating), and later eveningness preference (per adolescent rating). Nearly all significant effects remained in sensitivity analyses controlling for adolescent- or parent-reported ADHD symptom dimensions. CONCLUSIONS: Findings provide the strongest evidence to date for SCT being uniquely linked to poorer sleep, greater daytime sleepiness, and a later evening circadian preference across subjective and objective measures. Longitudinal studies are needed to evaluate predictive and bidirectional associations.

Differential diagnoses of irritability and temper loss in a 6-year-old.

Irritability and temper loss are common concerns among young children seen for mental health diagnostic evaluations and represent features of nearly a dozen childhood mental health conditions. Thus, careful assessment of irritability and temper loss is essential for informing case conceptualization, diagnosis, and treatment recommendations. The current case study provides a clinical description of a 6-year-old Black male ("Tyler") seen in a tertiary pediatric medical center for concerns related to significant inattention, hyperactivity, impulsivity, oppositional behaviors, irritability, and severe temper loss displayed at home and school. The clinical description summarizes findings from rating scales and diagnostic evaluations, case conceptualization, as well as treatment recommendations. Detailed suggestions for clinicians regarding strategies for assessing irritability and temper loss and questions to consider when seeking clarification to inform differential diagnoses are provided.

A Multi-Method, Multi-Informant Test of Maternal Emotion Socialization in Relation to Adolescent Fears of Social Evaluation.

Fears of negative and positive social evaluation are considered potential transdiagnostic mechanisms underpinning multiple internalizing disorders and impairments in adolescence. Although emotion socialization processes have been associated with adolescents' internalizing symptoms, the socialization of distinct fears of social evaluation has not been studied. Thus, the goal of the current study was to test whether mother's emotion expression, direct messages, responses to emotions, and parenting behaviors interact with adolescents' gender and temperamental shyness in relation to fears of negative and positive evaluation. A community sample of 107 adolescents ages 11 to 14 (M = 12.39; Girls = 45.8%) and their mothers completed survey measures of emotion socialization, temperament, and fears of social evaluation, in addition to participating in a speech preparation task used to code observed behaviors. For shy adolescents, adolescent-reported maternal cautious messages about social evaluation were associated with greater fears of positive evaluation, while encouraging messages were linked to less fears of positive evaluation. Further, maternal self-reported warmth was associated with fewer fears of negative and positive for shy adolescents, while supportive responses to emotions were linked to higher fears of positive evaluation for boys. Among girls, maternal ratings of encouraging messages were associated with higher fears of social evaluation, while cautious messages were linked to lower fears of negative evaluation. These findings are the first to consider several features of emotion socialization in relation to two distinct valences of adolescents' socio-evaluative fear, and highlight the importance of assessing emotion socialization behaviors via multiple informants and methods.

"My mom calls it Annaland": A Qualitative Study of Phenomenology, Daily Life Impacts, and Treatment Considerations of Sluggish Cognitive Tempo.

Objective: To conduct qualitative analysis of interviews to understand phenomenology, daily life impact, and treatment considerations of sluggish cognitive tempo (SCT) behaviors in children and adolescents. Method: Youth with elevated SCT symptoms (N = 15, ages 9-16 years) and their parents completed interviews focused on their perception and daily life impact of SCT behaviors. Parents were also asked about intervention targets. Results: Parents and youth had both negative and positive perceptions of SCT, with SCT fostering creativity/imagination and a break from stressors while also negatively impacting daily functioning. The domains most frequently selected by parents as SCT intervention targets were academics, emotions, mind wandering, morning routines, and self-esteem. Conclusion: Children and their parents share negative and positive views of SCT behaviors, while also detailing specific ways that SCT negatively impacts day-to-day functioning. This study offers insights into possible intervention targets as provided by youth and parents directly impacted by SCT.

Coping with COVID-19: Longitudinal Impact of the Pandemic on Adjustment and Links with Coping for Adolescents with and without ADHD.

Understanding factors that foster resilience and buffer against the negative psychological impact of COVID-19 is critical to inform efforts to promote adjustment, reduce risk, and improve care, particularly for adolescents with neurodevelopmental disorders. This prospective longitudinal study addresses this gap by investigating the impact of the COVID-19 pandemic on adolescents' mental health and substance use, and by assessing specific positive coping strategies among adolescents with and without attention-deficit/hyperactivity disorder (ADHD). Using multi-group autoregressive cross-lagged path models, the present study explored the reciprocal influence of positive coping behaviors on multiple adjustment outcomes including mental health symptoms, substance use, stress, and worry. Participants included 238 adolescents (132 male participants; ages 15-17; 118 with ADHD). Parents provided ratings of adolescent routines, and adolescents provided ratings of coping behaviors and psychological adjustment in spring (May/June), summer (July/August), and fall (October/November) 2020. All models included the effects of adjustment at the prior timepoint as well as relevant covariates including adolescent race, ethnicity, sex, medication status, and family income. Adolescents with ADHD were at greater risk for experiencing increases in mental health symptoms and substance use throughout the pandemic, relative to adolescents without ADHD. The use of positive coping strategies and adolescent routines buffered against increases in substance use and mental health problems for adolescents with ADHD. These findings have important clinical and public policy relevance for parents, schools, and employers who may aim to prioritize keeping schedules as consistent as possible to promote healthy adjustment.

Low School Support Exacerbates the Association between Peer Difficulties and Sluggish Cognitive Tempo in Adolescents.

OBJECTIVE: Although peer difficulties and sluggish cognitive tempo (SCT) are related, studies have yet to examine environmental factors that may advance further understanding of this association. The current study tested whether peer difficulties, specifically social competence and peer victimization, interacted with school support, a component of school climate, in relation to adolescents' SCT symptoms. Further, we explored whether these relations would be differentially associated with SCT in adolescents with and without attention-deficit/hyperactivity disorder (ADHD). METHOD: Adolescents (N = 288; Mage = 14.08, 45% female, 82.6% White; 52% with ADHD) completed measures of social competence, peer victimization, school climate support, and SCT and ADHD inattentive (IN) symptoms. Parents also reported on adolescents' social competence, SCT, and ADHD-IN symptoms. RESULTS: Results indicated that adolescent and parent ratings of lower social competence were both associated with higher adolescent-reported SCT symptoms in the context of low, but not high, school support. Relational and nonphysical victimization were associated with higher self-reported SCT symptoms in the context of low school support. Lower adolescent- and parent-reported social competence were also related to higher parent-reported SCT symptoms, with these associations not moderated by school support. These results remained after controlling for demographics and ADHD-IN symptoms and were similar across adolescents with and without ADHD. CONCLUSIONS: Findings from the current study are the first to provide evidence that peer difficulties and school climate are jointly related to adolescents' self-reported SCT and underscore the importance of continued research investigating social adversity and environmental factors in relation to SCT.

Examining the Structural and External Validity of the Adult Concentration Inventory for Assessing Sluggish Cognitive Tempo in Adults.

The Adult Concentration Inventory (ACI) is an adult self-report measure of sluggish cognitive tempo (SCT) developed following a meta-analysis identifying items distinguishing SCT from attention-deficit/hyperactivity disorder (ADHD) inattention. To date, only one study conducted in college students has examined the structural and external validity of the ACI. The current study evaluated the convergent and discriminative validity of the ACI in a community sample of adults, in addition to testing unique associations with internalizing symptoms, daily life executive functions, and sleep. Adults (N = 286; Mage = 44.45; 83.6% female) completed ratings of SCT, ADHD symptom dimensions, and external correlates. An a priori two-factor model with cross-loadings found 10 of the 16 SCT items to have high loadings on the SCT factor and low loadings on the ADHD inattention factor. SCT was uniquely associated with higher internalizing symptoms, time management and self-organization difficulties, poorer sleep quality, shorter sleep duration, lower sleep efficiency, and more daytime sleepiness. These findings replicate and extend support for the ACI in assessing SCT in adults.

Sluggish Cognitive Tempo Symptoms, But Not ADHD or Internalizing Symptoms, Are Uniquely Related to Self-Reported Mind-Wandering in Adolescents With ADHD.

Objective: The purpose of this study was to test the relation between sluggish cognitive tempo (SCT) symptoms and self-reported mind-wandering in a sample of adolescents with ADHD. Method: Adolescents (N = 79; aged 13-17 years; 70% male) diagnosed with ADHD completed measures of SCT, ADHD, anxiety, and depression symptoms, in addition to mind-wandering. Parents also provided ratings of adolescents' ADHD symptoms. Results: All adolescent-reported psychopathology dimensions, including ADHD, internalizing, and SCT, were significantly bivariately correlated with greater mind-wandering. However, in regression analysis that considered psychopathologies simultaneously, SCT was the only dimension uniquely associated with greater mind-wandering. This finding was unchanged when parent-reported ADHD symptoms were included in the model. Conclusion: These findings are the first to show that SCT symptoms are uniquely related with self-reported mind-wandering in adolescents with ADHD and underscore the importance of considering co-occurring SCT symptoms when testing the interrelations between ADHD and mind-wandering. Replication is needed in larger samples and with other measures of mind-wandering.