Response Inhibition and the Rorschach ‘M’ Response

Previous research indicated that a relationship existed between production of the Rorschach M response and inhibition of motor activity. The present study investigated this relationship under conditions which approximated those involved in the normal process of impulse control. Volunteer college students were used as subjects. Ss who engaged in a response inhibition task subsequently produced significantly more M responses than did Ss who had engaged in a noninhibitory task. This supported the hypothesis that M is an indication of the tendency to deal with impulses through fantasy.     

The complementarity of apparent and real motion

Summary It is proposed that apparent motion does not parallel real motion. Bather, apparent motion occurs when the off-period is equivalent to angular velocities at which an object in real motion appears blurred. Experimental evidence is reported which supports this view. It suggests that apparent motion serves biologically to extend the range of motion perception beyond that allowed by time-constants early in the visual system.     

Community-based co-occurring disorder (COD) intermediate and advanced treatment for offenders

Against a backdrop of increasing concern about the adequacy of treatment for co-occurring substance use and mental disorders (typically known as "co-occurring disorders," or COD) in the criminal justice system, this article attempts to provide empirical evidence for a typology of levels of COD treatment for offenders in both prison and community settings. The paper investigates two levels of treatment programs for COD; "intermediate" programs, in which treatment programming has been designed primarily for offenders with a single disorder, and "advanced" programs, in which programming has been designed to provide integrated substance abuse treatment and mental health services. Findings from a national survey of program directors indicated that both intermediate and advanced COD treatment programs were similar in their general approach to substance abuse treatment, but differed considerably in their treatment of mental disorders, where the advanced programs employed significantly more evidence- and consensus-based practices. Results provide support for the distinction between intermediate- and advanced-level services for offenders with COD and support a typology that defines advanced programs as integrating a range of evidence- and consensus-based practices so as to modify treatment sufficiently to address both diseases.     

A darwinian perspective: right premises,questionable conclusion. A commentary on Niall Shanks and Rebecca Pyles' "Evolution and medicine: the long reach of "Dr. Darwin""

As Dobzhansky wrote, nothing in biology makes sense outside the context of the evolutionary theory, and this truth has not been sufficiently explored yet by medicine. We comment on Shanks and Pyles' recently published paper, Evolution and medicine: the long reach of "Dr. Darwin", and discuss some recent advancements in the application of evolutionary theory to carcinogenesis. However, we disagree with Shanks and Pyles about the usefulness of animal experiments in predicting human hazards. Based on the darwinian observation of inter-species and inter-individual variation in all biological functions, Shanks and Pyles suggest that animal experiments cannot be used to identify hazards to human health. We claim that while the activity of enzymes may vary among individuals and among species, this does not indicate that critical events in disease processes occurring after exposure to hazardous agents differ qualitatively between animal models and humans. In addition, the goal is to avoid human disease whenever possible and with the means that are available at a given point in time. Epidemics of cancer could have been prevented if experimental data had been used to reduce human exposures or ban carcinogenic chemicals. We discuss examples.     

Tobacco use among high school athletes and nonatieletes: results of the 1997 youth risk behavior survey

In the United States today, the use of tobacco has become an entrenched part of teenage culture. The present study used the 1997 Youth Risk Behavior Survey (YRBS), which collected data from a nationally representative sample of 16,262 students in public and private high schools, to compare the tobacco use patterns of athletes and nonathletes. The independent variable, athletic participation, differentiated between moderately involved (1 or 2 teams) and highly involved (3 or more teams) athletes. Frequency of cigarette and cigar smoking and smokeless tobacco use served as the operational measure of tobacco use. Age, race/ethnicity, parental education, and residence were controlled. Logistic regression was used to calculate odds ratios for female and male athletes and nonathletes for each of the tobacco use variables. It was found that both male and female athletes were less likely to have ever smoked regularly, the effect being stronger for more highly involved athletes of both genders. Cigar smoking was unrelated to athlete status. Both female and male athletes were more likely to have used smokeless tobacco, the effect being stronger for more highly involved athletes of both genders. The findings are discussed in terms of access to health information, performance considerations, social status factors, the salience of an athletic identity, and the influence of the athletic subculture on its members.     

Performance of the CJDATS Co-Occurring Disorders Screening Instruments (CODSIs) among minority offenders

Previous research has shown the performance of the CJDATS Co-Occurring Disorders Screening Instruments (CODSI-MD and SMD)--six- and three-item instruments to screen for any mental disorder (CODSI-MD) and for severe mental disorders (CODSI-SMD), respectively--to be comparable or superior to other, longer instruments. This study tested the stability of the performance of the CODSI-MD and SMD across three racial/ethnic groups of offenders entering prison substance abuse treatment programs (n = 353), consisting of 96 African American, 120 Latino, and 137 White admissions. The Structured Clinical Interview (SCID) was used to obtain DSM-IV Axis I and II diagnoses; a lifetime SCID diagnosis of a mental disorder or a severe mental disorder was the criterion against which the CODSI-MD and SMD were validated. Results showed no statistical differences in sensitivity or specificity for either the CODSI-MD or SMD across the African American, Latino, and White prisoner groups. The value of the CODSI-MD and SMD as brief screens for mental disorders among offenders with diverse racial/ethnic backgrounds is discussed.