Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 105
Filter
1.
Infant Behav Dev ; 75: 101933, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38507845

ABSTRACT

In Western societies, social contingency, or prompt and meaningful back-and-forth exchanges between infant and caregiver, is a powerful feature of the early language environment. Research suggests that infants with better attentional skills engage in more social contingency during interactions with adults and, in turn, social contingency supports infant attention. This reciprocity is theorized to build infant language skills as the adult capitalizes on and extends the infant's attention during socially contingent interactions. Using data from 104 infants and caregivers, this paper tests reciprocal relations between infant attention and social contingency at 6- and 12-months and the implications for infant vocabulary at 18-months. Infant attentional skills to social (women speaking) and nonsocial (objects dropping) events were assessed, and social contingency was examined during an 8-minute toy play interaction with a caregiver. Child receptive and expressive vocabulary was measured by caregiver-report. Both social and nonsocial attentional skills related to engagement in social contingency during caregiver-infant interaction, though only models that included social attention and social contingency predicted vocabulary. These findings provide empirical evidence for the proposed reciprocal relations between infant attention and social contingency as well as how they relate to later language.


Subject(s)
Attention , Language Development , Vocabulary , Humans , Female , Infant , Male , Attention/physiology , Play and Playthings/psychology , Social Behavior , Adult , Infant Behavior/physiology , Infant Behavior/psychology
2.
Dev Psychol ; 60(3): 456-466, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38421798

ABSTRACT

Research suggests foster children are at risk for poor language skills. One intervention, attachment and biobehavioral catch-up (ABC), was shown to successfully improve not only young foster children's attachment to their parents, but also their receptive vocabulary skills (Bernard et al., 2017; Raby et al., 2019). Given that language acquisition is intricately linked to parents' sensitive interactions with their children, we ask whether the ABC intervention also improves the quality of parents' talk addressed to children. We test whether the ABC intervention results in more conversational turns between parents and their children. Crucially, we also look within these conversational turns, assessing the number and types of questions that parents ask children. Results suggest that parents who received the ABC intervention do not have more conversational turns or ask higher numbers of questions, compared to parents who received the control intervention. Rather, parents in the ABC group ask a higher proportion of child-led and restatement questions, and a lower proportion of parent-led and pedagogical questions, compared to the control. Additionally, the higher proportion of child-led questions were related to higher parental sensitivity scores. Together, these results suggest that an intervention originally designed to improve children's socioemotional outcomes had positive benefits for the quality of conversations between parents and children. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Subject(s)
Language Development , Parents , Humans , Foster Home Care , Vocabulary , Communication
3.
Acta Psychol (Amst) ; 238: 103983, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37473668

ABSTRACT

A growing body of evidence from the science of learning demonstrates the educational effectiveness of active, playful learning. Connections are emerging between this pedagogy and the broad set of skills that it promotes in learners, but potential mechanisms behind these relations remain unexplored. This paper offers a commentary based on the science of learning and interest development literature, suggesting that interest may mediate the relation between active, playful learning and student outcomes. This theory is established by identifying principles of active, playful learning that predict interest development and associations between learner interest and key skills for success in the classroom and beyond. Future research should investigate the dynamic relation between active, playful learning, interest, and student achievement over time and across phases of interest while taking a broader set of student outcomes into account.


Subject(s)
Learning , Students , Humans , Educational Status , Achievement
4.
Infancy ; 28(5): 930-957, 2023.
Article in English | MEDLINE | ID: mdl-37350307

ABSTRACT

Early screening for language problems is a priority given the importance of language for success in school and interpersonal relationships. The paucity of reliable behavioral instruments for this age group prompted the development of a new touchscreen language screener for 2-year-olds that relies on language comprehension. Developmental literature guided selection of age-appropriate markers of language disorder risk that are culturally and dialectally neutral and could be reliably assessed. Items extend beyond products of linguistic knowledge (vocabulary and syntax) and tap the process by which children learn language, also known as fast mapping. After piloting an extensive set of items (139), two phases of testing with over 500 children aged 2; 0-2; 11 were conducted to choose the final 40-item set. Rasch analysis was used to select the best fitting and least redundant items. Norms were created based on 270 children. Sufficient test-retest reliability, Cronbach's alpha, and convergent validity with the MB-CDI and PPVT are reported. This quick behavioral measure of language capabilities could support research studies and facilitate the early detection of language problems.


Subject(s)
Language , Vocabulary , Child , Humans , Child, Preschool , Reproducibility of Results , Learning
5.
Adv Child Dev Behav ; 64: 69-107, 2023.
Article in English | MEDLINE | ID: mdl-37080675

ABSTRACT

The first 5 years of life are characterized by incredible growth across domains of child development. Drawing from over 50 years of seminal research, this chapter contextualizes recent advances in language sciences through the lens of developmental cascades to explore complexities and connections in acquisition. Converging evidence-both classic and contemporary-points to the many ways in which advances in one learning system can pose significant and lasting impacts on the advances in other learning systems. This chapter reviews evidence in developmental literature from multiple domains and disciplines (i.e., cognitive, social, motor, bilingual language learning, and communication sciences and disorders) to examine the phenomenon of developmental cascades in language acquisition.


Subject(s)
Child Development , Language Development , Child , Humans , Child Development/physiology , Language , Language Development Disorders , Linear Models , Multilingualism , Child Language
6.
J Exp Child Psychol ; 227: 105582, 2023 03.
Article in English | MEDLINE | ID: mdl-36375314

ABSTRACT

It is well known that infants undergo developmental change in how they respond to language-relevant visual contrasts. For example, when viewing motion events, infants' sensitivities to background information ("ground-path cues," e.g., whether a background is flat and continuous or bounded) change with age. Prior studies with English and Japanese monolingual infants have demonstrated that 14-month-old infants discriminate between motion events that take place against different ground-paths (e.g., an unbounded field vs a bounded street). By 19 months of age, this sensitivity becomes more selective in monolingual infants; only learners of languages that lexically contrast these categories, such as Japanese, discriminate between such events. In this study, we investigated this progression in bilingual infants. We first replicated past reports of an age-related decline in ground-path sensitivity from 14 to 19 months in English monolingual infants living in a multilingual society. English-Mandarin bilingual infants living in that same society were then tested on discrimination of ground-path cues at 14, 19, and 24 months. Although neither the English nor Mandarin language differentiates motion events based on ground-path cues, bilingual infants demonstrated protracted sensitivity to these cues. Infants exhibited a lack of discrimination at 14 months, followed by discrimination at 19 months and a subsequent decline in discrimination at 24 months. In addition, bilingual infants demonstrated more fine-grained sensitivities to subtle ground cues not observed in monolingual infants.


Subject(s)
Multilingualism , Speech Perception , Humans , Infant , Language Development , Cues , Language
7.
Dev Sci ; 26(3): e13338, 2023 05.
Article in English | MEDLINE | ID: mdl-36318975

ABSTRACT

High-quality communicative interactions between caregivers and children provide a foundation for children's social and cognitive skills. Although most studies examining these types of interactions focus on child language outcomes, this paper takes another tack. It examines whether communicative, dyadic interactions might also relate to child executive function (EF) skills and whether child language might mediate this relation. Using a subset of data from the NICHD Study of Early Child Care and Youth Development, dyadic interactions between 2-year-olds and their mothers were coded for three behaviors: symbol-infused joint engagement, routines and rituals, and fluency and connectedness. Child language was assessed at age 3 and three facets of EF (self-regulation, sustained attention, and verbal working memory) were assessed at age 4.5. Structural equation modeling showed that dyadic interaction related to later child sustained attention and verbal working memory, indirectly through child language and directly related with child self-regulation. This suggests that communicative interactions with caregivers that include both verbal and non-verbal elements relate to child EF, in part through child language. Our findings have implications for the role of caregiver interactions in the development of language and cognitive skills more broadly. RESEARCH HIGHLIGHTS: Using structural equation modeling, we examined how communicative interactions between caregivers and toddlers relate to preschool executive function skills Communicative interactions relate to later language which in turn relates to sustained attention and verbal working memory in preschool Communicative interactions relate directly to self-regulation in preschool Associations between communicative interactions, language, and executive function vary across facets of executive function and may not be unidirectional.


Subject(s)
Executive Function , Language , Female , Humans , Child, Preschool , Adolescent , Executive Function/physiology , Communication , Mothers/psychology , Memory, Short-Term
8.
J Commun Disord ; 100: 106276, 2022.
Article in English | MEDLINE | ID: mdl-36335826

ABSTRACT

INTRODUCTION: This research examined the classification accuracy of the Quick Interactive Language Screener (QUILS) for identifying preschool-aged children (3;0 to 6;9) with developmental language disorder (DLD). We present data from two independent samples that varied in prevalence and diagnostic reference standard. METHODS: Study 1 included a clinical sample of children (54 with DLD; 13 without) who completed the QUILS and a standardized assessment of expressive grammar (Syntax subtest from the Diagnostic Evaluation of Language Variation-Norm Referenced; Structured Photographic Expressive Language Test-Preschool 2nd Edition; or Structured Photographic Expressive Language Test-3 rd Edition). Study 2 included a community sample of children (25 with DLD; 101 without) who completed the QUILS and the Auditory Comprehension subtest of the Preschool Language Scales-5th Edition (PLS-5; Zimmerman et al., 2011). Discriminant analyses were conducted to compare classification accuracy (i.e., sensitivity and specificity) using the normreferenced cut score (< 25th percentile) with empirically derived cut scores. RESULTS: In Study 1, the QUILS led to low fail rates (i.e., high specificity) in children without impairment and statistically significant group differences as a function of children's clinical status; however, only 65% of children with DLD were accurately identified using the norm-referenced cutoff. In Study 2, 76% of children with DLD were accurately identified at the 25th percentile cutoff and accuracy improved to 84% when an empirically derived cutoff (<32nd percentile) was applied. CONCLUSIONS: Findings support the clinical application of the QUILS as a component of the screening process for identifying the presence or absence of DLD in community samples of preschool-aged children.


Subject(s)
Language Development Disorders , Child, Preschool , Humans , Language Development Disorders/diagnosis , Language Tests , Language , Comprehension
9.
Dev Sci ; 25(1): e13148, 2022 01.
Article in English | MEDLINE | ID: mdl-34235822

ABSTRACT

Spatial skills support STEM learning and achievement. However, children from low-socioeconomic (SES) backgrounds typically lag behind their middle- and high-SES peers. We asked whether a digital educational app-designed to mirror an already successful, spatial assembly training program using concrete materials-would be as effective for facilitating spatial skills in under-resourced preschoolers as the concrete materials. Three-year-olds (N = 61) from under-resourced backgrounds were randomly assigned to a business-as-usual control group or to receive 5 weeks of spatial training using either concrete, tangible materials or a digital app on a tablet. The spatial puzzles used were an extension of items from the Test of Spatial Assembly (TOSA). Preschoolers were pretested and posttested on new two-dimensional (2D) TOSA trials. Results indicate that both concrete and digital spatial training increased performance on the 2D-TOSA compared to the control group. The two trainings did not statistically differ from one another suggesting that educational spatial apps may be one route to providing early foundational skills to children from under-resourced backgrounds.


Subject(s)
Mobile Applications , Spatial Navigation , Achievement , Child, Preschool , Educational Status , Humans
10.
Dev Psychol ; 58(1): 55-68, 2022 Jan.
Article in English | MEDLINE | ID: mdl-34881965

ABSTRACT

Although questions fuel children's learning, adult cell phone use may preoccupy parents, affecting the frequency of questions parents and children ask and answer. We ask whether parental cell phone use will lead to a decrease in the number of questions children and parents ask one another while playing with a novel toy. Fifty-seven parent-child dyads (Mage = 48.72 months, SD = 6.53, 28 girls; 84.2% White) were randomly assigned to a cell phone, paper, or control condition. As children played with a novel toy with hidden functions, parents in the cell phone condition completed a survey about reading on their cell phone, while parents in the paper condition did it on paper. Parents in the control condition did not complete the survey. Results suggest that children asked fewer questions in the cell phone than in the control condition. However, no other condition differences emerged. Parents' information-seeking questioning, however, differed in all three conditions: they asked more in the control than in the cell phone and paper conditions and, critically, asked more in the paper than cell phone condition. Possible explanations and implications for parents' cell phone use are discussed. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Subject(s)
Cell Phone Use , Child, Preschool , Female , Humans , Learning , Parent-Child Relations , Parents , Reading
11.
Rev. logop. foniatr. audiol. (Ed. impr.) ; 41(4): 183-196, Oct-Dic, 2021. tab, ilus, graf
Article in English | IBECS | ID: ibc-227649

ABSTRACT

Introduction and objectives: Developing a language screener for Dual Language Learners presents numerous challenges. We discuss possible solutions for theoretical and methodological problems often encountered in the development of such a test and illustrate possible solutions using a newly developed language screener for Dual Language Learners. Materials and methods: The process for developing, validating and norming the screener is also offered as a potential model for the development of other assessments for Dual Language Learners throughout the world. The twelve types of subtests are in three categories: Vocabulary, Syntax, and Process. Results and conclusions: Results from the Tryout and Norming phase on 362 Dual Language Learners aged 3–5;11 years are presented, together with the results of item selection via IRT, validity, and reliability testing. The advantage of using Best Scores is highlighted as a useful measure to identify children who are at risk for language difficulties that will impact their academic success. Importantly, knowledge is found to be distributed across the languages.(AU)


Introducción y objetivos: Desarrollar un evaluador del lenguaje para estudiantes bilingües presenta numerosas dificultades. Abordamos las posibles soluciones para problemas teóricos y metodológicos que se encuentran a menudo en dichas pruebas, e ilustramos las posibles soluciones utilizando un evaluador recientemente desarrollado para estudiantes bilingües. Materiales y métodos: El proceso de desarrollo, validación y normalización del evaluador se ofrece también como un modelo potencial para el desarrollo de otras evaluaciones de estudiantes bilingües a nivel mundial. Los 12 tipos de subpruebas se reúnen en tres categorías: vocabulario, sintaxis y proceso. Resultados y conclusiones: Se presentan los resultados de la fase de prueba y normalización en 362 estudiantes bilingües de tres a cinco; 11 años, junto con los resultados de la selección de ítems a través de las pruebas de IRT, validez y fiabilidad. La ventaja de utilizar las mejores puntuaciones destaca como medida útil para identificar a los niños con riesgo de dificultades lingüísticas, las cuales repercutirán en su éxito académico. De manera notable, se ha detectado que el conocimiento se distribuye entre los idiomas.(AU)


Subject(s)
Humans , Male , Female , Child, Preschool , Students , Communication Barriers , Linguistics , Language Development , Multilingualism , Language Disorders , Vocabulary , Language Tests , Speech, Language and Hearing Sciences , Audiology , Education , Language
13.
Trends Cogn Sci ; 25(10): 816-818, 2021 10.
Article in English | MEDLINE | ID: mdl-34312063

ABSTRACT

Public space interventions offer one example of how to translate cognitive science into the public square. Here, we detail several successful projects and the six principles of learning that underlie them that support caregiver-child engagement, interaction, and the use of content area-specific language. Policy and community implications are also discussed.


Subject(s)
Cognitive Science , Language , Humans
14.
J Exp Child Psychol ; 209: 105181, 2021 09.
Article in English | MEDLINE | ID: mdl-34049060

ABSTRACT

We investigated the relations among theory of mind (ToM), mental state talk, and discourse comprehension. Specifically, we examined the frequency of mental state talk in children's oral recall of narrative texts and informational texts as well as relations among ToM, mental state talk (inclusion of mental state words in the recall of narrative and informational texts), and narrative and informational text comprehension. Results from children in Grade 4 (N = 132; Mage = 10.39 years) revealed that a greater number of mental state talk instances appeared in children's recall of narrative texts than in their recall of informational texts, but the mean number also differed across texts within a genre. ToM skill predicted the extent of mental state talk in narrative texts and informational texts, and the relation was stronger for narrative texts than for informational texts, after accounting for vocabulary, grammatical knowledge, working memory, and attentional control. Mental state talk in narrative texts was extremely strongly related to narrative comprehension, whereas mental state talk in informational texts was weakly related to informational text comprehension. Results suggest that ToM skill relates to mental state talk in the recall of texts, and both ToM and mental state talk play greater roles in comprehension of narrative texts than in comprehension of informational texts.


Subject(s)
Comprehension , Theory of Mind , Child , Humans , Narration , Reading , Vocabulary
15.
J Exp Child Psychol ; 207: 105091, 2021 07.
Article in English | MEDLINE | ID: mdl-33676116

ABSTRACT

Creativity is typically measured using divergent thinking tasks where participants are asked to generate multiple responses following a prompt. However, being able to generate responses captures only a partial picture of creativity. Convergent thinking, in which a single solution is chosen, is an equally important part of creativity that is often left out of divergent thinking assessments. Moreover, as the field of creativity evolves, exploration is starting to be recognized as an understudied component of how children generate and apply creative solutions. The current study moved beyond typical divergent thinking tasks and examined a measure of creativity that also captured 4- to 6-year-old children's convergent thinking and exploration behaviors. A total of 130 children participated in a creative problem-solving task where they were asked to remove a ball from a jar using everyday objects. Children's actions were coded as divergent thinking, convergent thinking, or exploration behaviors. Results demonstrated that divergent and convergent thinking performance was not associated with success on the task, indicating that simply generating and selecting more responses is not always enough to achieve a creative outcome. Children's exploration behaviors were positively associated with success on the task. Exploration behaviors were more likely to lead to success if they were purposeful and iterative. These findings provide some of the first evidence that children's exploration is a vital component of creativity.


Subject(s)
Creativity , Thinking , Achievement , Child , Child, Preschool , Exploratory Behavior , Humans , Problem Solving
16.
Infancy ; 26(1): 123-147, 2021 01.
Article in English | MEDLINE | ID: mdl-33306866

ABSTRACT

Infants from low-socioeconomic status (SES) households hear a projected 30 million fewer words than their higher-SES peers. In a recent study, Hirsh-Pasek et al. (Psychological Science, 2015; 26: 1071) found that in a low-income sample, fluency and connectedness in exchanges between caregivers and toddlers predicted child language a year later over and above quantity of talk (Hirsh-Pasek et al., Psychological Science, 2015; 26: 1071). Here, we expand upon this study by examining fluency and connectedness in two higher-SES samples. Using data from the NICHD Study of Early Child Care and Youth Development, we sampled 20 toddlers who had low, average, and high language outcomes at 36 months from each of 2 groups based on income-to-needs ratio (INR; middle and high) and applied new coding to the mother-toddler interaction at 24 months. In the high-INR group, the quality of mother-toddler interaction at 24 months accounted for more variability in language outcomes a year later than did quantity of talk, quality of talk, or sensitive parenting. These results could not be accounted for by child language ability at 24 months. These effects were not found in the middle-INR sample. Our findings suggest that when the quality of interaction, fluency and connectedness, predicts language outcomes, it is a robust relation, but it may not be universal.


Subject(s)
Language Development , Language , Mother-Child Relations , Parenting , Social Class , Child, Preschool , Female , Humans , Income , Longitudinal Studies , Male
17.
J Child Media ; 15(4): 526-548, 2021.
Article in English | MEDLINE | ID: mdl-35282402

ABSTRACT

Experts have expressed concerns about the lack of evidence demonstrating that children's "educational" applications (apps) have educational value. This study aimed to operationalize Hirsh-Pasek, Zosh, et al.'s (2015) Four Pillars of Learning into a reliable coding scheme (Pillar 1: Active Learning, Pillar 2: Engagement in the Learning Process, Pillar 3: Meaningful Learning, Pillar 4: Social Interaction), describe the educational quality of commercially-available apps, and examine differences in educational quality between free and paid apps. We analyzed 100 children's educational apps with the highest downloads from Google Play and Apple app stores, as well as 24 apps most frequently played by preschool-age children in a longitudinal cohort study. We developed a coding scheme in which each app earned a value of 0-3 for each Pillar, defining lower-quality apps as those scoring ≤ 4, summed across the Four Pillars. Overall scores were low across all Pillars. Free apps had significantly lower Pillar 2 (Engagement in Learning Process) scores (t-test, p < .0001) and overall scores (t-test, p < .0047) when compared to paid apps, due to the presence of distracting enhancements. These results highlight the need for improved design of educational apps guided by developmental science.

18.
Am Psychol ; 76(8): 1347, 2021 11.
Article in English | MEDLINE | ID: mdl-35113599

ABSTRACT

Memorializes Leslie Rescorla (1945-2020). Rescorla, Professor Emeritus of Psychology and Class of 1897 Professor of Science Emeritus at Bryn Mawr College, passed away in Havertown, PA on October 12, 2020. Rescorla, who was born in Washington, DC on August 15, 1945, came to Bryn Mawr in 1985; where she taught in the Psychology Department and directed the College's Phebe Anna Thorne School and, until 2018, its Child study Institute. For many years she chaired the department and directed its Clinical Developmental Psychology doctoral program. She supervised over 70 undergraduate senior research projects, 26 MA theses, and 45 PhD dissertations, and in 2002 received the College's McPherson Prize for excellence in teaching, scholarship, and service to the community. Leslie majored in Modern European History at Radcliffe College, graduating magna cum laude and Phi Beta Kappa in 1967 and earned her MA in Economic History at the London School of Economics in 1968. She received a PhD in Child Development and Clinical Psychology from Yale in 1976 and completed her clinical training at Yale, Children's Hospital of Philadelphia, and the Philadelphia Child Guidance Center. She remained a licensed clinical and school psychologist throughout her career and was long-time director of Bryn Mawr's School Psychologist Certification program. Leslie's research focused on late development of language in children. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Subject(s)
Awards and Prizes , Psychology, Clinical , Child , Female , Humans , Schools , Students , Universities
19.
Child Dev ; 92(1): 35-53, 2021 01.
Article in English | MEDLINE | ID: mdl-32776574

ABSTRACT

This study investigated the relation between Dual Language Learners' (N = 90) vocabulary and grammar comprehension and word learning processes in preschool (aged 3-through-5 years). Of interest was whether: (a) performance in Spanish correlated with performance in English within each domain; and (b) comprehension predicted novel word learning within and across languages. Dual-language experience was evaluated as a potential moderator. Hierarchical linear modeling revealed stronger predictive associations within each language than across languages. Across languages, results varied by experience and domain. Structural sensitivity theory suggests exposure to two languages heightens awareness of parameters along which languages vary and provides a framework for interpreting complex associations within and across languages. Knowledge from one language may influence learning in both.


Subject(s)
Awareness , Comprehension , Language Development , Multilingualism , Child , Child Language , Child, Preschool , Humans , Language , Language Tests , Learning , Linguistics , Male , Vocabulary
20.
Front Psychol ; 11: 2158, 2020.
Article in English | MEDLINE | ID: mdl-33013552

ABSTRACT

During the unprecedented coronavirus disease (COVID-19) crisis, virtual education activities have become more prevalent than ever. One activity that many families have incorporated into their routines while at home is virtual storytime, with teachers, grandparents, and other remote adults reading books to children over video chat. The current study asks how dialogic reading over video chat compares to more traditional forms of book reading in promoting story comprehension and vocabulary learning. Fifty-eight 4-year-olds (M age = 52.7, SD = 4.04, 31 girls) were randomly assigned to one of three conditions (Video chat, Live, and Prerecorded). Across conditions, children were read the same narrative storybook by a female experimenter who used the same 10 scripted dialogic reading prompts during book reading. In the Video chat (n = 21) and Live conditions (n = 18), the experimenter gave the scripted prompts and interacted naturally and contingently, responding in a timely, relevant manner to children's behaviors. In the Prerecorded condition (n = 19), children viewed a video of an experimenter reading the book. The Prerecorded condition was pseudo-contingent; the reader posed questions and paused for a set period of time as if to wait for a child's response. After reading, children completed measures of vocabulary and comprehension. Results revealed no differences between conditions across six different outcome measures, suggesting that children comprehended and learned from the story similarly across book formats. Further, children in the three experimental conditions scored significantly higher on measures than children in a fourth condition (control) who had never read the book, confirming that children learned from the three different book formats. However, children were more responsive to the prompts in the Live and Video chat conditions than the Prerecorded condition, suggesting that children recognized that these interactions were contingent with their responses, a feature that was lacking in the Prerecorded condition. Results indicate that children can comprehend books over video chat, suggesting that this technology is a viable option for reading to children, especially during the current pandemic.

SELECTION OF CITATIONS
SEARCH DETAIL
...