Numerical reproduction in pigeons

Pigeons were trained to match the number of responses made during a production phase to the number of keylight flashes (2, 4, or 6) in a previous sample phase. In Experiment 1, there were 2 conditions in which the flashes were programmed to occur at a constant rate or within a constant overall duration. For both conditions, although accuracy was relatively low, responding increased linearly with flash number and coefficients of variation decreased. Positive transfer to novel numbers was obtained only when test and baseline trials had the same temporal organization, but multiple regressions revealed significant control by number independently of temporal cues. In Experiment 2, flashes were programmed to occur pseudorandomly to degrade the validity of temporal cues. Results were similar to in Experiment 1. A prototype response class model accounted for the major features of the data. According to the model, responses during the production phase are shaped into higher order units that are associated with different stimulus numbers and function as a rough category scale of numerosity.     

Recounting the same events again and again: children's consistency across multiple interviews

Children (2–13 years at time of injury) were interviewed four times about an injury that required hospital Emergency Room treatment, namely at 1 week, 6 months, 1 year, and 2 years. The consistency of children's reports was assessed and all children gave mostly the same information at each interview, although consistency was higher for older children and for injury rather than hospital details. Furthermore, details recalled at every interview were virtually always accurate while details that were sometimes omitted were a little less likely to be accurate. New information that was introduced after 6 months was more likely to be accurate than inaccurate but new information introduced at 1 or 2 years post‐injury was just as likely to be wrong as right (except for 12–13‐year‐olds). Implications for forensic situations are discussed. Copyright © 2001 John Wiley & Sons, Ltd.     

Religious Occupations and Stress Questionnaire (ROS): Instrument Development

The authors describe the development of the Religious Occupations and Stress Questionnaire (ROS), which attempts to fill the need for an appropriate measure of the stress experienced by individuals in religious occupations. The ROS has 4 stress‐related subscales (General Stress. Occupational Stress, Identity/Image Stress, and Gender Issues Stress) and a Coping subscale. Results of reliability and validity studies of the ROS with male and female Protestants, Catholics, and Jews who were in religious occupations indicated high internal consistency, test‐retest reliability, and construct validity.     

SEX DIFFERENCES IN CONFORMITY: STATUS AND GENDER ROLE INTERPRETATIONS

The experiment examines status and gender role explanations of the tendency for women to conform more than men in group pressure settings. Subjects believed they were assigned to groups containing two males and two females in addition to themselves and received these other group members' opinions, which were represented as deviating from the opinions that subjects had given earlier. Subjects then gave their opinions with the other group members either having or not having surveillance over these opinions. In addition, subjects were required to form impressions of each other's likability or expertise. The findings indicate that subjects' sex and age affected the extent of their conformity. Among older (19 years and older) subjects, females conformed more with surveillance than without it, whereas surveillance did not affect males' conformity. Among younger (under 19 years) subjects, surveillance had no effects. Analysis of sex differences revealed that older females were significantly more conforming than older males when under surveillance as well as when subjects formed impressions of one another's likability. Among younger subjects, there were no sex differences. These findings are discussed in terms of the theories that (a) both sex and age function as status characteristics and (b) gender roles determine conformity.     

Narcissism and body image

This research examined the relationship between narcissism, as measured by the Narcissistic Personality Inventory (NPI; Raskin & Hall, 1979), and body image, as measured by the Body-Self Relations Questionnaire ( Winstead & Cash, 1984), in a nonclinical sample of college students. Also examined were narcissism's relationships to masculinity, femininity, and self-esteem. Results indicated that more narcissistic individuals had more favorable body images and were higher in masculinity and self-esteem. No gender differences were observed in either the levels of narcissism or its body image correlates. Overall, the findings suggest that the NPI measures “adjusted” narcissism rather than the “maladaptive” narcissism emphasized in theoretical and clinical accounts of the construct.     

Pregnancy in the workplace: Does pregnancy affect performance appraisal ratings?

Archival data were collected to examine bias effects in performance evaluation related to employee pregnancy. Prior survey research has suggested that many supervisors and co-workers hold negative views of pregnant employees. Performance appraisal ratings were collected before, during, and after pregnancy for employees taking maternity leave over a four year time frame. In addition, data was also collected from randomly selected control subjects, which were matched on job title and observation period. Contrary to expectations, performance appraisal ratings were found to increase during pregnancy when compared to before ratings and control group ratings. Potential explanations as well as suggestions for further research are discussed.     

The effects of a career course on undecided college students

The effects of a career course taught by 11 instructors (two sections each) for college students, who were undecided about a major field or career, were evaluated in a pre-post design using the Vocational Identity, Occupational Information, and Barrier scales of the My Vocational Situation (J. A. Holland, D. C. Daiger, & P. G. Power, Palo Alto, Calif.: Consulting Psychologists Press, 1980). Large main effects were observed for the Identity and Occupational Information scales, but not for the Barriers scale. No interactions by instructor or student characteristics were found by using a simple ANOVA procedure or by using a split plot factorial design. The implications for new research and career instructors were discussed.