Effects of the community mental health centers program on the growth of mental health facilities in nonmetropolitan areas

Using a quasi-experimental design, changes in the numbers of mental health facilities between 1964 and 1974 were examined for a sample of 50 nonmetropolitan catchment areas that established a Community Mental Health Center (CMHC) before January 1973 and a sample that did not. Compared to non-CMHC areas, CMHC areas had a slightly greater number of general hospital psychiatric units in 1974. Nevertheless, the rate of increase in such units over the 10-year period was not significantly different between the two types of areas. Other findings supported the conclusion that the number of outpatient and day/night facilities continued to increase in areas not participating in the CMHC program, but that the program produced even greater numbers of such facilities in areas that did participate. This growth, though, occurred both through introducing additional facilities and supplanting existing ones.     

On Adhering to Judicial Instructions: Reactions of Dogmatic and Nondogmatic Juries to the Judge's Charge in an Entrapment Case1

Juries differing in dogmatism assessed the culpability of a defendant who had sold heroin to an undercover police officer and pled entrapment as his legal defense. The extenuating circumstances surrounding the drug sale provided either a reasonably compelling justification (high extenuating circumstances) or minimal justification (low extenuating circumstances) for an entrapment plea. Because of their alleged respect for and reliance on the pronouncements of authority figures, it was hypothesized that dogmatic juries would be more influenced than nondogmatic juries by the judge's charge about the meaning of entrapment (which, in this case, focused on the propriety of police conduct). Analyses of the jury deliberations, the decisions rendered, and postexperimental questionnaire data supported this hypothesis. Some implications of these outcomes are discussed.     

Attention deficit disorder in reading-disabled twins: Evidence for a genetic etiology

In order to assess the genetic etiology of attention deficit hyperactivity disorder (ADHD), the basic regression model for the analysis of selected twin data (DeFries & Fulker, 1985, 1988) was fitted to questionnaire data (DICA: Diagnostic Interview for Children and Adolescents; Herjanic, Campbell, & Reich, 1982) for 37 identical and 37 fraternal twin pairs tested in the Colorado Reading Project. Results of this analysis suggest that ADHD is highly heritable. Moreover, adjusting DICA scores for either IQ or reading performance differences did not substantially change parameter estimates. In future analyses of larger data sets, distinguishing between possible subtypes of attentional problems (e.g., ADD with or without hyperactivity) may facilitate tests of more searching etiological questions.This work was supported in part by program project and center grants from NICHD (HD-11681 and HD-27802) to J. C. DeFries. This report was prepared while J. Gillis was supported by NIMH training grant MH-16880, and J. Gilger was supported by a Fellowship in Developmental Psychobiology through the University of Colorado (MH-15442). B. Pennington was also supported by NIMH grants MH-38820 and MH-45916. The invaluable contributions of staff members and families who participated in the Colorado Reading Project are gratefully acknowledged. We also acknowledge the expert editorial assistance of the late Rebecca G. Miles.     

Perceptions of sexual harassment as a function of sex of rater and incident form and consequence

The purpose of this study was to investigate differences in perceptions of two “severity dichotomies” present in the Equal Employment Opportunity Commission Guidelines on sexual harassment. Alale and female undergraduates (N = 198), from a predominately white midwestern university, were given one of four statements based on these guidelines, varying “form” (physical/verbal) and “consequence” (economic injury/hostile environment) of the behavior. Analysis of variance results showed females rated the incident as more definitely sexual harassment and as affecting perfonnance more than did males. Participants reading “economic injury” statements rated them as having more effect on the victim’s job status than did those reading “hostile environment” statements. A multivariate analysis of variance revealed significant “consequence” and “sex” effects on several factors: A significant three-way interaction showed that males rated statements less negatively than did females, especially when the statement described “physical” behavior with “hostile environment“ consequences. Cluster analysis results are also presented.     

Reinforcement magnitude effects in first- and second-order conditioning of directed action

Three experiments investigated the effects of reinforcement magnitude on conditioned key pecking in pigeons. Experiment 1, which included between-groups and within-subject designs, yielded significant effects of unconditioned stimulus (US) magnitude on the within-conditioned stimulus (CS) distribution of key pecks and on choice behavior, but no effect on the overall rate of key pecking. Experiment 2 employed a larger US-magnitude difference in a within-subject design. This manipulation resulted in differential rates of key pecking as well as a significant choice effect and differential within-CS key-peck distributions. A second-order conditioning procedure was used in Experiment 3, in which diffuse, visual stimuli (S1's) served as Pavlovian reinforcers for two key-light S2's. The S1 previously paired with a large US was more effective in conditioning second-order key-peck behavior to an S2 than was the S1 paired with a small US. The results of these experiments demonstrate that the associative effects of US magnitude can be expressed in the strength of CS-directed motor responding. The distinctive within-CS key-peck distributions in first-order conditioning suggests an interaction between CS- and US-directed responses.     

Blocking of inhibitory conditioning within a serial conditioned stimulus-conditioned inhibitor compound: Maintenance of acquired behavior without an unconditioned stimulus

Well-trained classically conditioned stimuli, presented unreinforced, were protected from extinction when they were followed by a signal of the omission of the reinforcer (conditioned inhibitor Konorskian type) in eight cats. An aversive classical conditioning paradigm with shock as the reinforcer was used. Of several behavioral (leg flexion, vocalization) and organismic arousal (heart rate, respiration rate, respiration amplitude) measures of conditioned responses, the respiration amplitude changes were found to be most informative for the continuous assessment of elicited arousal of low and medium intensity. In all subjects conditioned stimuli presented during extinction in serial compound with the conditioned inhibitor elicited larger responses than did conditioned stimuli presented alone during extinction. The mechanism of protection from extinction in a paradigm in which the elicitor of learned behavior occurs prior to the conditioned inhibitor provides the organism with the mechanism for the maintenance of learned behavior in the absence of a reinforcer.     

Loudness and reaction time: I

It is widely assumed, based on Chocholle’s (1940) research, that stimuli that appear equal in loudness will generate the same reaction times. In Experiment 1, we first obtained equal-loudness functions for five stimulus frequencies at four different intensity levels. It was found that equal loudness produced equal RT at 80 phons and 60 phons, but not at 40 phons and 20 phons. It is likely that Chocholle obtained equivalence between loudness and RT at all intensity levels because of relay-click transients in his RT signals. One main conclusion drawn from Experiment 1 is that signal detection (in reaction time) and stimulus discrimination (in loudness estimation) require different perceptual processes. In the second phase of this investigation, the RT-intensity functions from six different experiments were used to generate scales of auditory intensity. Our analyses indicate that when the nonsensory or “residual” component is removed from auditory RT measures, the remaining sensory-detection component is inversely related to sound pressure according to a power function whose exponent is about — 3. The absolute value of this exponent is the same as the .3 exponent for loudness when interval-scaling procedures are used, and is one-half the size of the .6 exponent which is commonly assumed for loudness scaling.     

Unions as Justice-Promoting Organizations: The Interactive Effect of Ethnicity,Gender, and Perceived Union Effectiveness

This study explored the interactive effect ofmembers' ethnicity, gender, and perceived unioneffectiveness in promoting fairness on formal unionparticipation. Research on union participation suggests that formal participation is lowest amongethnic minority and women members. It was predicted andfound that the relationship between perceived unioneffectiveness and formal participation is jointlymoderated by ethnicity and gender. The nature of thetriple interaction was such that the relationshipbetween perceived effectiveness and formal participationwas strongest for ethnic minority women (n = 102), next strongest for nonethnic minority women (n =300) and nonethnic minority men (n = 734), and weakestfor ethnic minority men (n = 82).     

The need for teaching philosophy in medical education

The dearth of philosophical contributions to medicine has recently been discussed in a series of articles in this journal. The present article focuses on physicians' lack of training in philosophy as a part of the explanation of the scarcity of works in philosophy of medicine. In section I I outline two philosophy courses which would be reasonable additions to the medical school curriculum required of all medical students. In section II I suggest two other philosophy courses as electives in a medical education. All four courses are in the fields of epistemology and metaphysics, and so will help others see the relevance to medicine of philosophical fields other than ethics.