Do the myths still exist? Revisiting people's negative beliefs about organ donation upon death

The prevalence of myths preventing people partial to donation in Australia from consenting is unknown. Respondents (N?=?468: 381 donors, 26 non-donors, 61 undecided) were surveyed about their (negative) donation beliefs. Approximately 30% of donors were neutral or supported negative beliefs about organ allocation, especially donation to undesirable organ recipients and a black market organ trade. Confusion about brain death, lack of family and religious support, and discomfort with donation were negative beliefs endorsed by some respondents irrespective of donor preference. Proportionally, donors had greater trust in hospitals/doctors than other groups. Some myths still exist but may vary with donation preference.     

The Mediating Role of Executive Functioning in the Relation Between Difficult Temperament and Physical Aggression

The present investigation tested the hypothesis that executive functioning (EF) would mediate the relation between difficult temperament (DT) and aggressive behavior. This model was tested in 310 adult men and women. DT was measured using the Dimensions of Temperament Scale—Revised, EF was measured using 7 well-established neuropsychological tests, and aggression was assessed using the Buss–Perry Aggression Questionnaire. EF successfully mediated the DT–aggression relation for men, however, the model did not hold for women. Results are discussed with regard to how they influence current models of aggressive behavior as well as their implications for future violence prevention efforts.     

Post-September 11th Perspectives on Religion, Spirituality, and Philosophy in the Personal and Professional Lives of Selected REBT Cognoscenti

The purpose of this article was for selected Rational Emotive Behavior Therapy (REBT) cognoscenti to examine the impact of the events of September 11th, 2001, on their beliefs about religion, spirituality, and their personal philosophy—including the role of evil in the universe and the implications of these issues on their use of REBT. The degree of consistency of the author’s views with classical REBT theory and philosophy was examined. The authors are current or former members of the Albert Ellis Institute’s International Training Standards and Policy Review Committee, of which Albert Ellis, REBT’s founder, is also a member. Reprinted from Journal of Counseling & Development, Fall 2004, Volume 82. ACA. Reprinted with permission. No further reproduction authorized without written permission from the American Counseling Association. We regret to inform readers that Stephen G. Weinrach died in April 2004. Stephen G. Weinrach expressed gratitude to Jacqueline Mirabile, Laura Hutelmyer, and Phylis Wright of Villanova University’s Falvey Memorial Library for valuable research assistance. Jesse Clancy and Bethany Coover provided deeply appreciated and important editorial support.     

Gender differences in mathematics performance: a meta-analysis

Reviewers have consistently concluded that males perform better on mathematics tests than females do. To make a refined assessment of the magnitude of gender differences in mathematics performance, we performed a meta-analysis of 100 studies. They yielded 254 independent effect sizes, representing the testing of 3,175,188 Ss. Averaged over all effect sizes based on samples of the general population, d was -0.05, indicating that females outperformed males by only a negligible amount. For computation, d was -0.14 (the negative value indicating superior performance by females). For understanding of mathematical concepts, d was -0.03; for complex problem solving, d was 0.08. An examination of age trends indicated that girls showed a slight superiority in computation in elementary school and middle school. There were no gender differences in problem solving in elementary or middle school; differences favoring men emerged in high school (d = 0.29) and in college (d = 0.32). Gender differences were smallest and actually favored females in samples of the general population, grew larger with increasingly selective samples, and were largest for highly selected samples and samples of highly precocious persons. The magnitude of the gender difference has declined over the years; for studies published in 1973 or earlier d was 0.31, whereas it was 0.14 for studies published in 1974 or later. We conclude that gender differences in mathematics performance are small. Nonetheless, the lower performance of women in problem solving that is evident in high school requires attention.     

Verbal uncertainty expressions: A critical review of two decades of research

The frequency with which verbal uncertainty expressions are employed suggests that they play an important role in the communication of states of uncertainty and may have an important role in emerging technologies such as Expert Systems. This article critically reviews empirical studies of verbal uncertainty expressions spanning two decades of research between 1967 and 1987 with the principal conclusions that: (1) People are highly internally consistent in their use of verbal uncertainty expressions; (2) No conclusions about between-subject variability are justified principally because (a) there is currently no consensus as to what is to count as consistent or inconsistent use and (b) there are several factors that confound purported analyses of between-subject consistency such as the composition of the stimulus set and the scaling tasks themselves; (3) One study suggests that assessments of the meaning of verbal uncertainty expressions may be conditioned by the prior perceived probabilities of the events they describe. However, other interpretations of this study are open. The review also discusses the more general epistemological question of whether the concept of uncertainty as manifest by verbal uncertainty expressions is really amenable to the unidimensional framework within which empirical studies have been conceived. I am indebted to Dylan Jones (UWIST) for his encouragement and support and to John Fox, (ICRF), Tom Wallsten and David Budescu for comments on earlier drafts. This work was supported, in part, by the Science and Engineering Research Council while the author was a postgraduate student at the Department of Applied Psychology, UWIST (now UWCC School of Psychology).     

The effects of feedback in psychophysical tasks

Previous results of the reinforcement effects of feedback in psychophysical tasks have been interpreted as changes in the S’s response bias in the uncertain sensory state. The present study varied the percentage of feedback in a two-altemative loud-soft recognition task. The values of the probability of correct feedback were 1, .8, .6, .4, .2, and 0. The results indicated that Ss learned to respond to agree with the experimental feedback rather than with the actual cue presented on a trial. The probability of a response on Trial n +1 was highly dependent upon the response and feedback of Trial n only when the two trials were the same. It was concluded that feedback must influence the response probability vector associated with a given detection state.     

A simple technique for delivering liquids directly to the mouth of an unrestrained rat

A simple surgical procedure is described that makes it possible to deliver liquids directly into the mouth of a freely mobile rat. Data presented show that an 8% sucrose solution delivered by this technique is an effective reinforcer in a variety of simple and discriminative schedules of reinforcement.     

An easily built and inexpensive apparatus for generating electroconvulsive shock

An easily constructed and inexpensive apparatus for generating electroconvulsive shock is described. The wide range of shock level adjustment and reliability of operation make it an excellent piece of equipment to have in laboratories using electroconvulsive shock as an experimental tool for research on memory and memory storage processes.     

Consolidation and interference in the perceptual memory system

Previous verbal/memory studies have indicated that perceptual processes continue to occur after the stimulus is terminated. The present study investigated whether a blank period after a nonverbal stimulus would function to strengthen or consolidate the sensory trace in memory. A “delayed-comparison task” of recognition memory for pitch was employed in two experiments. The results indicated that a blank interval after the tone to be remembered increased the memory strength of that tone when the tone’s duration was brief (.2 sec). However, an empty interval after a tone with a longer duration (.5 sec) did not affect memory performance. Memory strength also decreased over time during a retroactive interval tone. A storage-interference model described the quantitative results accurately.