Monitoring the Future (MTF) is an ongoing research program conducted at the University of Michigan's Institute for Social Research under a series of investigator-initiated research grants from the National Institute on Drug Abuse beginning in 1975. The integrated MTF study includes annual surveys of nationally-representative samples of 8th, 10th,…

Sotos syndrome is a congenital overgrowth disorder with an incidence of approximately 1 in 14,000. This study investigated behavioural characteristics of ASD within a large cohort of individuals with Sotos syndrome (n = 78). As measured by the Social Responsiveness Scale, second edition (SRS-2), 65 participants (83.33%) met clinical cut-off…

This study addresses the frequency and the distribution of reported lying in the adult population. A national survey asked 1,000 U.S. adults to report the number of lies told in a 24-hour period. Sixty percent of subjects report telling no lies at all, and almost half of all lies are told by only 5% of subjects; thus, prevalence varies widely and…

This study of 12 residents of a treatment facility for individuals with mental retardation examined cycles in occurrences of self-injurious behavior (SIB) and aggression both within and across individuals. The study confirmed that such behavior tended to be rhythmical, with cycles of three-month and five-month periods consistently observed for…

Relative prevalence of stereotyped behaviors was studied with 246 children and adults with developmental disabilities. Two staff members completed a 54-item checklist assessing stereotyped behaviors, abnormal focused affections, compulsions, rigidity, savant skills, and defensiveness. Factor analyses produced weak evidence for a general stereotypy…

The prevalence of compulsions in 210 adults with severe/profound mental retardation was studied. Prevalences were as follows: stereotypy (60.9 percent), self-injury (46.6 percent), and compulsion (40 percent). The occurrence of compulsions was positively associated with the occurrence of stereotypy, self-injury, and stereotypy plus self-injury.…

The follow-up study examined 16 schizo-affective children after a mean of 16 years. In comparison to purely schizophrenic controls, subjects showed an increased incidence of affective psychoses, suicide in the ancestry, and more pre-morbidly well-adjusted personalities. The schizo-affective psychoses had mainly an acute-recurrent character.…

This study examined how type of task affected 42 subjects' drinking patterns. Results indicated that subjects who had completed light creative work drank more alcohol than those in noncreative tasks, and participants completing hard creative tasks drank more of both alcoholic and nonalcoholic fluids. Results are discussed in terms of the need to…

Sleep patterns of 103 institutionalized individuals with profound mental retardation were explored. Almost 40% were found to have short-sleep patterns. Short-sleep was predicted by blindness; nonshort-sleep was predicted by diagnosis of cerebral palsy and sodium valproate usage. Techniques for minimizing possible negative consequences of…

This study investigated demographic and phenomenological characteristics of obsessive compulsive disorder (OCD) in nine adults with Down syndrome (DS), and possible effects on adaptive behavior. Results suggest OCD is more common in the DS population than the non-DS population. Ordering and tidiness was the most common form of OCD found, and…

A study compared specific repetitive behaviors in 32 adults with autism with 34 controls with mental retardation. The occurrence of each behavior category, except dyskinesias, was higher in individuals with autism and they showed a greater number of topographies of stereotypy and compulsions. Repetitive behavior severity also predicated autism…

Tests of executive functions and control tasks not assessing executive function were administered to 19 individuals (ages 6-28) mild hyperphenylalaninemia (MHP) and 19 controls. Tests of academic skills and behavior-rating questionnaires were also administered to the group with MHP. No group differences were found for any measure. (Contains…

Structured direct interviews with 43 adults having moderate to severe mental retardation evaluated how they expressed grief and dealt with loss. One hundred service providers were also surveyed. Subjects were found to experience feelings of sadness, anger, anxiety, confusion, and pain; to continue some emotional turmoil one year after the loss;…

This study presents data on the physical, developmental, and behavioral characteristics of a group of 203 nonambulatory persons with profound mental retardation. It found a high prevalence of physical and medical problems, as well as high rates of self-injurious, stereotypic, and aggressive behavior and high variability in cognitive and adaptive…

Examines the frequency and correlates of unprotected anal intercourse among 250 gay and bisexual African-American men in the San Francisco (California) Bay area. More than 50 percent reported having unprotected anal intercourse in the past six months. Findings demonstrate the need for risk reduction programs targeting this population. (SLD)