Changes in the prevalence of child sexual abuse, its risk factors, and their associations as a function of age cohort in a Finnish population sample.

OBJECTIVE: We examined (1) the prevalence of childhood sexual abuse (CSA) experiences as a function of cohort and gender, (2) the prevalence of factors associated with CSA as a function of cohort and whether the association of these factors with CSA remained the same irrespective of cohort, and (3) whether any cohort differences could be explainable by cohort differences in reporting bias. METHOD: We used the responses of 4,561 men (M=29, SD=7 years) and 8,361 female (M=29, SD=7 years) Finnish participants who responded to the Childhood Trauma Questionnaire-Short Form as well as questions regarding family structure. RESULTS: The prevalence of CSA experiences varied between 0.7-4.6% for men and 1.8-7.5% for women depending on the item. Younger cohorts reported less CSA as well as less of the risk factors (physical neglect and abuse, emotional neglect and abuse, parental substances abuse, not growing up with both biological parents) that were positively associated with the likelihood of CSA. The effects of these risk factors did not vary as a function of the cohort. Also, the declining trend was not explainable by social desirability being higher in the younger cohorts. CONCLUSIONS: The results suggest that there is a real decline in the prevalence of CSA and it is associated with a simultaneous decline in factors associated with CSA.

Controlling anger in self-reported sober and alcohol intoxicated states: moderating effects of trait anger and alcohol consumption.

Controlling anger in self-reported sober and alcohol intoxicated states: Moderating effects of trait anger and alcohol consumption. Scandinavian Journal of Psychology 52, 382-388. Retrospective self-reports about prior sober and alcohol intoxicated states were explored to reveal moderating effects of trait anger and alcohol consumption on anger control. The analyses were based on self-reports of trait anger and alcohol consumption as well as self-reports of the participants' typical levels of anger control in sober and alcohol intoxicated states in a population based sample of Finnish twins and their siblings (N = 4,852). The reported levels of anger control were lower regarding prior alcohol intoxicated states than sober states. A three-way interaction between alcohol consumption, trait anger and anger control was found. Whereas no interaction between alcohol consumption and trait anger was found in the self-reported sober state, there was an interactive effect of trait anger and alcohol consumption on anger control in the intoxicated state, indicating that the difference in anger control between those with high levels of alcohol consumption and those with low levels, was greater at higher levels of trait anger. Women had lower levels of anger control than men, but the relationship between trait anger, alcohol consumption and anger control was similar for both genders. In conclusion, the results showed that those with high levels of trait anger and alcohol consumption showed the lowest levels of anger control in self-reported alcohol intoxicated states, and indicate the importance of separating between anger control when sober and intoxicated since anger control seems to be differently related to at least trait anger and alcohol consumption in these states.

Childhood sexual interactions with other children are associated with lower preferred age of sexual partners including sexual interest in children in adulthood.

Associations between childhood sexual interactions with other children, and preferred and actual age of sexual partners, as well as adults' sexual interest in children, were explored in a sample of 1312 Finnish male twins. Experience of sexual interaction with other children was associated with lower minimum age of preferred and actual sexual partners in adulthood. In addition, such interactions were connected to an increased likelihood of adults' sexual interest in children under the age of 16 years. None of the participants who reported no such interactions had sexual interest in children in adulthood. In addition, the presence of a female co-twin was associated with higher levels of childhood sexual interactions and lower minimum age of preferred and actual sexual partners. Finally, the extent of childhood sexual interactions was not affected by genetic factors, suggesting that the identified association represents true environmental causation. Experiences of childhood physical and sexual abuse were positively related to the extent of the childhood sexual interactions with other children. The results support the role of conditioning in the development of sexual age preferences.

Common genetic effects of gender atypical behavior in childhood and sexual orientation in adulthood: a study of Finnish twins.

The existence of genetic effects on gender atypical behavior in childhood and sexual orientation in adulthood and the overlap between these effects were studied in a population-based sample of 3,261 Finnish twins aged 33-43 years. The participants completed items on recalled childhood behavior and on same-sex sexual interest and behavior, which were combined into a childhood gender atypical behavior and a sexual orientation variable, respectively. The phenotypic association between the two variables was stronger for men than for women. Quantitative genetic analyses showed that variation in both childhood gender atypical behavior and adult sexual orientation was partly due to genetics, with the rest being explained by nonshared environmental effects. Bivariate analyses suggested that substantial common genetic and modest common nonshared environmental correlations underlie the co-occurrence of the two variables. The results were discussed in light of previous research and possible implications for theories of gender role development and sexual orientation.

The adult body: how age, gender, and body mass index are related to body image.

OBJECTIVE. Body image and perceived attractiveness were examined, and the impact of age, gender, and body mass index (BMI) was analyzed and discussed from an evolutionary and a sociocultural perspective. METHOD. The population-based sample consisted of 11,468 Finnish men and women aged 18 to 49 years. RESULTS. Both age-related decrease and increase in body satisfaction was detected as well as interactions between age and gender. Some effects were nonlinear. Women were generally less satisfied with their bodies than men. BMI had a stronger influence on women's body image than men's. DISCUSSION. It was proposed that it is insufficient to merely study how age affects general body image because adults might become more satisfied with some aspects of their bodies as a function of age and less satisfied with other aspects. Body satisfaction might also fluctuate during different phases of the adult life, and the patterns possibly differ between men and women.

Subjectively measured ejaculation latency time and its association with different sexual activities while controlling for age and relationship length.

INTRODUCTION: Recently, attempts to formulate valid and suitable definitions for (different subcategories of) premature ejaculation have resulted in substantial progress in the pursuit to gain knowledge about ejaculatory function. However, the association between ejaculatory dysfunction and different types of sexual activities has yet to be thoroughly investigated, and (due to conflicting results between studies) the potential effects of age and relationship length still need to be taken into account. AIM: The aim of this study is to investigate the associations of age, relationship length, frequency of different sexual activities, and different modes of achieving ejaculation with self-reported ejaculation latency time. MAIN OUTCOME MEASURES: The main outcome is establishing associations between age, relationship length, self-reported ejaculation latency time, and frequency of different kinds of sexual activities and different modes of achieving ejaculation (such as achieving ejaculation through oral or vaginal sex). METHODS: Statistical analyses of data on age, relationship length, self-reported ejaculation latency time, and frequency of different sexual activities and different modes of achieving ejaculation were conducted on a population-based sample of 3,189 males aged 18-48 years (mean = 29.9 years, standard deviation = 6.94). RESULTS: Age and relationship length were significantly negatively associated with self-reported ejaculation latency time. Frequency of different kinds of sexual behavior generally had a positive association with self-reported ejaculation latency time, as had different modes of achieving ejaculation. CONCLUSIONS: The findings highlight the need for more extensive studies on and increased knowledge of different aspects of ejaculatory function before a valid and suitable definition for premature ejaculation can be formulated.

Psychiatric symptoms and same-sex sexual attraction and behavior in light of childhood gender atypical behavior and parental relationships.

This study explores the relation between the level of current symptoms of depression and anxiety and recalled childhood gender atypical behavior (GAB), and quality of relationships with parents among men and women who reported same-sex sexual attraction or engaged in same-sex sexual behavior and men and women who did not. Matched pairs, 79 men (n = 158) and 148 women (n = 296), with equal levels of GAB were created of Finnish participants with either same-sex sexual attraction or behavior and participants without. The measures used were retrospective questionnaires. Ratings of maternal and paternal over-control and coldness differed as a function of same-sex sexual attraction or behavior. Childhood GAB was correlated with negative ratings of parental relationships. Both same-sex sexual attraction or behavior and a history of childhood GAB affected the reported levels of current depression and anxiety. Only gender typical participants with no same-sex sexual attraction or behavior reported significantly lower levels of symptoms. The findings suggest that childhood GAB is related to later distress both among hetero- and homosexual individuals. The elevated level of psychological distress among homosexual individuals, reported in several studies, might--to some extent--be caused by their generally higher levels of childhood GAB as opposed to a homosexual orientation per se.

Exploring genetic and environmental effects in dysphonia: a twin study.

PURPOSE: To explore the existence of genetic effects as well as the interaction between potential genetic effects and a voice-demanding occupation on dysphonia. METHOD: One thousand seven hundred and twenty-eight Finnish twins (555 male; 1,173 female) born between 1961 and 1989 completed a questionnaire concerning vocal symptoms and occupation. The zygosity determination resulted in 125 monozygotic and 108 dizygotic full twin pairs. A composite variable called dysphonia was formed by summing 6 vocal symptoms based on the results of a factor analysis. Twin model fitting was used to explore the contribution of genetic and environmental effects on the dysphonia variable. RESULTS: Individual differences in dysphonia were explained by genetic effects (35%) and nonshared environmental effects (65%). Shared environmental effects were estimated at 0%. Also, the authors found that for the participants who worked in voice-demanding occupations, the causes of dysphonia were more environmental, whereas the etiology of the symptoms was more strongly affected by genes in the participants with less voice-demanding occupations. However, this gene-environment interaction was not statistically significant. CONCLUSION: Both genetic and environmental factors have an impact on the etiology of voice problems. Environmental factors, either independently or interacting with genetic factors, seem to play the key role, especially if the person has a voice-demanding occupation.

Female sexual dysfunction, sexual distress, and compatibility with partner.

INTRODUCTION: Few studies have looked at prevalence estimates for female sexual dysfunctions in combination with personal distress, although existing diagnostic criteria for sexual disorders include both aspects. Further, the variation in female sexual function has been shown to be largely explained by unique nongenetic factors. Such factors may include partner sexual function and perception of sexual compatibility with a partner, factors which may also be associated with sexual distress. AIM: We investigated the association between female sexual dysfunction and distress as well as their association with partner compatibility. METHODS: In order to assess sexual function and distress, the Female Sexual Function Index and seven items from the Female Sexual Distress Scale were used in a population-based sample of 5,463 women, aged 18-49 years. The women were, based on cutoff points, classified as either having neither dysfunction nor distress, one of them, or both, separately for each dysfunction. Further, the associations between partner compatibility, distress, and sexual dysfunctions were analyzed. Sexual compatibility with partner was investigated by using several items exploring, for example, amount of foreplay, interest in sex, and communication about sexual matters. MAIN OUTCOME MEASURES: Associations between partner compatibility and female sexual function and sexual distress. RESULTS: The proportion of women reporting both sexual dysfunction and distress ranged from 7% to 23%, depending on the dysfunction. Desire disorders followed by orgasmic disorders were most common. All compatibility variables were significantly associated with distress and with most of the sexual dysfunctions. The main complaints of the women were "too little foreplay" (42%) and "partner is more interested" (35%). The women feeling distress or having a sexual dysfunction reported more incompatibility with partner compared with functional women. CONCLUSIONS: The findings highlight the importance of addressing partner compatibility for successful treatment and counseling of female sexual dysfunctions.

Retrospective reports of parental physical affection and parenting style: a study of Finnish twins.

Individual differences in parenting behaviors are due, in part, to genetic factors. In the present study, the authors sought to determine whether the degree of genetic influence varied according to the type of parental behavior under consideration. A population-based sample of 2,334 pairs of Finnish twins provided ratings on the physical affection, control, abusiveness, and indifference shown by their father and mother during childhood. Genetic influences, shared environmental influences, and nonshared environmental influences accounted for a small-to-medium proportion (17%-30%), a small-to-large proportion (22%-44%), and a medium-to-large proportion (37%-55%) of the variance in each parenting measure, respectively. There were no significant differences in effect sizes for mothers and fathers or across the 4 types of parental behavior. The genetic results may reflect characteristic styles with which parents respond to genetically influenced behaviors of individuals (gene-environment correlations) or individual perceptions of this relationship (gene-person correlation processes). The findings have implications for intervention and prevention work with families and for interpretation of evidence for interactions between genes and parenting behaviors.

Factor structure of the Alcohol Use Disorders Identification Test (AUDIT) for men and women in different age groups.

OBJECTIVE: Our main aim was to investigate the factor structure of the Alcohol Use Disorders Identification Test (AUDIT) in a Finnish population sample. METHOD: The AUDIT was completed by 3,125 men (mean age = 26.2 years) and 6,006 women (mean age = 26.1 years). RESULTS: At a cutoff score of 8 or more, 49.8% of the men and 23.9% of the women would be identified as potentially engaged in excessive alcohol use. Exploratory factor analyses suggested a two-factor solution for both men and women. However, the factor structure was not invariant between men and women or in the different age groups among men. CONCLUSIONS: This is one of the largest known general population studies on alcohol use in recent years in Finland. The findings support a two-factor solution, and it is suggested that the AUDIT cutoff scores should be tailored according to age, gender, and drinking culture.

Indicators of premature ejaculation and their associations with sexual distress in a population-based sample of young twins and their siblings.

INTRODUCTION: Recently, in anticipation of the Diagnostic and Statistical Manual of Mental Disorders V, much consideration has been given to the diagnostic criteria for premature ejaculation (PE). The scientific community is yet to agree not only on the etiology of PE, but also on the most suitable diagnosis and forms of treatment. It has been suggested that the diagnostic criteria of PE should be strictly empirical and rely on intravaginal latency time alone, whereas others stress the need to also include psychological and personal factors. AIM: To examine different indicators of PE and their relationship with and ability to predict sexual distress. MAIN OUTCOME MEASURES: Statistical analyses of data on sexual distress and different measures of ejaculatory function on a population-based sample of 3,332 Finnish men. METHODS: The present study involved a population-based sample of 3,332 males, of which 2,328 were twins aged 18-33, and 1,004 were over 18-year-old siblings to the aforementioned (M = 26.17 years of age). The individual contributions of different PE-indicator variables to experienced sexual distress were investigated by calculating correlations and performing a regression analysis. RESULTS: All included indicators of PE were significantly associated with sexual distress, and significant and logical differences in sexual distress were found between intravariable levels for several of the indicator variables. Only variables relating to subjective experience (e.g., worrying about PE) were uniquely related to sexual distress when other indicators were controlled for. CONCLUSIONS: The results suggest that variables measuring subjective experience may be useful when considering diagnostic criteria if indicators that are related to sexual distress are considered useful. However, overall, the association between PE and sexual distress is not especially strong, emphasizing the fact that more objective indicators of PE may not necessarily be associated with significant distress.

Do the same genetic and environmental effects underlie the covariation of alcohol dependence, smoking, and aggressive behaviour?

We investigated genetic and environmental effects on alcohol dependence, smoking, and aggressive behaviour, as well as sex differences in these effects and whether these effects were the same for the three phenotypes. There were 3141 male (mean age 26.2 [S.E.=0.1]) and 6026 female (mean age 26.1 [S.E.=0.1]) participants in this extended twin study. Alcohol Use Disorder Identification Test (AUDIT), number of cigarettes smoked, and two subscales of Aggression Questionnaire (AQ) were used to assess the phenotypes. All three were positively interrelated with males exhibiting higher levels on each phenotype. Multivariate model fitting identified genetic effects on all phenotypes for both men and women ranging between 69% (aggressive behaviour in women) and 78% (alcohol dependence in men). The effects were stronger in men for alcohol dependence and smoking. There were no qualitative genetic sex differences. Genetic correlations between all phenotypes were substantial.

Discrepancies between sexual desire and sexual activity: gender differences and associations with relationship satisfaction.

The nature of sexual satisfaction and its relationship with relationship satisfaction was examined in a population-based Finnish sample of men and women between 33 and 43 years. Both men and women wished to experience kissing and petting, sexual fantasies, oral sex, and vaginal intercourse more often. Sexual satisfaction, defined as no discrepancy between desired frequency and actual frequency of sexual behaviors, was associated with relationship satisfaction. In both sexes, sexual satisfaction with vaginal intercourse as well as kissing and petting was positively associated with relationship satisfaction, whereas higher desired and actual frequency of masturbation were negatively associated with relationship satisfaction.

Evaluation of the female sexual function index in a population based sample from Finland.

The factor structure and reliability of the Female Sexual Function Index (FSFI) was evaluated in a Finnish population based sample of 2,081 women, age 33-43 years. In addition, associations between female sexual function and age, psychological distress, alcohol use, hormone based contraceptives, child sexual abuse (CSA), and adult sexual abuse were examined. The results supported a six factor solution for the FSFI with high internal consistencies, in line with earlier research in clinical populations. Psychological distress was positively associated with every dimension of the FSFI except desire problems. Age was associated with fewer pain problems. Alcohol use was associated with every dimension of the FSFI, but the direction of the association depended on if it was drinking in general or in connection to intercourse. More drinking in general was related to fewer sexual function problems while drinking in connection to intercourse was related to more sexual function problems. No significant correlation was found between adult sexual abuse and sexual function but between CSA and lubrication, satisfaction, and pain problems. Usage of oral contraceptive pill was not significantly associated with sexual function. The use of hormone based intrauterine systems was significantly associated with less pain and more desire, arousal, and satisfaction. In conclusion, the study supports use of the FSFI for assessing sexual function not only in clinical samples but also in population based samples. The associations found between sexual function and other important variables showed the complexity of sexual function.

Female sexual function and its associations with number of children, pregnancy, and relationship satisfaction.

Associations between number of children, pregnancy, and overall relationship satisfaction were explored in a population-based sample of 2081 women, aged 33-43 years. Multiparous women had less orgasm problems compared to nulliparous women. Nulliparous women had more pain problems and were sexually less satisfied compared to women with children, regardless of the number. Women pregnant with the first child had fewer pain problems compared to a matched nonpregnant control and were sexually more satisfied. Being more satisfied with the overall relationship was related to higher sexual satisfaction and less sexual function problems.

Potential for homosexual response is prevalent and genetic.

We investigated the potential to engage in homosexual behavior in 6001 female and 3152 male twins and their siblings finding that 32.8% of the men and 65.4% of the women reported such potential (p<0.001). 91.5% of these men and 98.3% of these women reported no overt homosexual behavior during the preceding 12 months. The potential to engage in homosexual behavior was influenced by genetic effects for both men (37.4%) and women (46.4%) and these overlapped only partly with those for overt homosexual behavior.

Genetic effects on male sexual coercion.

The genetic and environmental influences on sexual coercion, and to what extent its associations with alcohol use and psychopathy depend on shared genetic and environmental effects, were explored in a Finnish population-based sample of 938 men, aged 33-43 years, using the classical twin study design. All three phenotypes were associated positively and affected by genes (sexual coercion 28%, alcohol use 60%, psychopathy 54%), with 46% of the correlation between sexual coercion and psychopathy, 89% of the correlation between alcohol use and psychopathy and 100% of the correlation between sexual coercion and alcohol use being explained by shared genetic effects. Further, the results showed that a proportion of the variance in sexual coercion was derived from a highly genetic source that was common with alcohol use and psychopathy. This latent factor was hypothesized to reflect a general tendency for antisocial behavior that is pervasive across different situations. Relevant theories on sexual coercion were discussed in light of the results.

Premature and delayed ejaculation: genetic and environmental effects in a population-based sample of Finnish twins.

INTRODUCTION: A number of different theoretical approaches to understanding the etiology of ejaculatory dysfunction have been proposed, but no behavior genetic study has yet, to our knowledge, been conducted to explore the genetic and environmental influences on ejaculatory dysfunction. AIM: The aim of the present study was to explore the genetic and environmental effects on premature (PE) and delayed (DE) ejaculation in a population-based sample. METHODS: The genetic and environmental influences on PE and DE were investigated in a population-based sample of 1,196 Finnish male twins, age 33-43 years, with 91 identical and 110 complete twin pairs. Several different aspects of ejaculatory function were measured by a self-report questionnaire (e.g., latency time, subjective experience of ejaculatory control). Factor analyses distinguished two subcomponents of ejaculatory function, and subsequently, composite variables measuring PE and DE were created. Structural equation modeling was performed on the composite variables. MAIN OUTCOME MEASURES: Measurement of genetic and environmental effects on PE and DE. RESULTS: The results suggested moderate genetic influence (28%) on PE, but not on DE (0%). There was a moderate familial effect on DE with shared environmental effects accounting for 24% of the variance. However, omission of the shared environmental component did not directly result in a significantly decreased model fit for DE, and omission of the additive genetic component did not directly result in a significantly decreased fit for the PE model. CONCLUSIONS: The findings from the present study provide useful information regarding the etiology and understanding of ejaculatory dysfunction.

Genetic and environmental effects on sexual excitation and sexual inhibition in men.

The Sexual Inhibition and Sexual Excitation Scales (SIS/SES) measure the propensity for sexual inhibition and excitation in men. According to the theoretical model underlying the SIS/SES, sexual response and associated behavior depend on dual control mechanisms in the brain involving the balance of excitatory and inhibitory systems which impinge on sexual response. Previous research with the SIS/SES has indicated one higher-order excitatory factor and two higher-order inhibitory factors affecting sexual response. The present study analyzed the item structure and the psychometric properties of the instrument in a population based sample of Finnish male twins (N = 1,289), and, including 37 out of 45 items of the original scales, estimated the heritability of and the environmental influences on the excitatory and inhibitory mechanisms. The twin correlations and the structural equation modeling suggested modest heritability for both inhibitory mechanisms. Sexual excitation, in contrast, was not influenced by genetic effects and similarities between twins for this mechanism seemed to be caused by the common environment of the twins.