Meehl's contribution to clinical versus statistical prediction

Paul E. Meehl's work on the clinical versus statistical prediction controversy is reviewed. His contributions included the following: putting the controversy center stage in applied psychology; clarifying concepts underpinning the debate (especially his crucial distinction between ways of gathering data and ways of combining them) as well as establishing that the controversy was real and not concocted, analyzing clinical inference from both theoretical and probabilistic points of view, and reviewing studies that compared the accuracy of these 2 methods of data combination. Meehl's (1954/1996) conclusion that statistical prediction consistently outperforms clinical judgment has stood up extremely well for half a century. His conceptual analyses have not been significantly improved since he published them in the 1950s and 1960s. His work in this area contains several citation classics, which are part of the working knowledge of all competent applied psychologists today.     

Multiple professional identities: examining differences in identification across work-related targets

Although there is a growing literature on organizational identification, relatively little research has investigated other possible targets of identification. In a sample of veterinarians working in a wide range of organizations, the authors compared their identification with the veterinary profession, their organization, and their workgroup. The authors found different patterns of identification across these targets depending on whether the individual (a) worked in a veterinary medicine or nonveterinary medicine organization and (b) was an owner/partner or an associate. Owners of veterinary medicine organizations identified more with the organization than with either the profession or their workgroup. Associates in veterinary medicine organizations identified more with the organization and the workgroup than with the profession. Veterinarians in nonveterinary medicine organizations identified more with the profession and their workgroup than with the organization. Identification with each of the targets provided independent predictive validity of job satisfaction.     

On shame and the perceived credibility of sexual assault allegations

Despite the high incidence of sexual assault, doubt about allegations is common. Previous research suggests that victims expressing positive or no emotion are perceived as less credible than those expressing negative emotions. However, little is known about which specific negative emotional expressions contribute to credibility in this context. In two studies (N = 623), participants read a date rape vignette. The alleged victim's statement was paired with a picture of a female person expressing either shame, sadness, or no emotion. Participants rated the credibility of her account and completed a measure of rape myth acceptance. Controlling for rape myth acceptance, allegations were perceived as more credible when accompanied by an expression of shame versus sadness (a negative, low arousal control condition). It is critical to be aware of the shame-credibility bias in this context to intervene and support those who have experienced sexual assault.     

Rhythm perception and differences in accent weights for musicians and nonmusicians

In order to investigate the contribution of harmonic—temporal and structural features to the perception of musical rhythm, three experiments were conducted in which a harmonic and a temporal accent were pitted against each other in such a way as to form five possible patterns. In three experiments, the temporal structure of various chord progressions was manipulated in an effort to determine the harmonic contributions to the inference of meter. The final experiment differed from the first two in the use of nondiatonic progressions that implied an unlikely key modulation. In all experiments, musicians and nonmusicians were requested to report perceived rhythm patterns in an attempt to determine the relative salience of various accents. Results indicated that changes in the temporal structure led to predictable change in an inferred meter, and that all diatonic chord progressions led to similar patterns of responses in which coincidences of harmonic, temporal, and metrical accents were perceptually salient events. Unusual progressions implying key modulations resulted in a qualitatively distinct pattern of results, and, in all experiments, amount of formal musical training was found to be a good predictor of the use of harmonic cues.     

A methodological study of auditory lateralization

The just-noticeable-shift (JNS) threshold of a centered image was determined for four naive Ss A two interval forced choice situation was used under the method of constant stimuli. The three manners of presentation of the intensity imbalance were as follows: (1) an increase in intensity at one ear, (2) a decrease in intensity at one ear, (3) an increase in intensity at one ear produced concommitantly with a decrease in intensity at the opposite ear. The sign test demonstrated significant differences between method (2) and methods (1) and (3).     

Comparisons of some learning models for response bias in signal detection

The effects of variations in signal probability and varying degrees of correct feedback on response bias were studied in a yes-no auditory signal detection task. The main finding was that the bias towards saying yes was an increasing function of the frequency of signal feedback events, but did not depend on the correctness of the feedback. Several learning models coupled with a simple psychophysical and decision model yielded predictions about overall biases and certain sequential statistics. Only one model, which can be decribed as an “informational” model, gave a good account of both observed overall biases and sequential statistics. This model assumes the observer’s response bias is strengthened for the feedback-reinforced response when the observer’s sensory information is ambiguous or is contradicted by the feedback information.     

Gender vs. power: Self-posed behavior revisited

In an extended replication of Mills' (1984) study, equal numbers of male and female students in arts and science schools were photographed by a female undergraduate. Arts students, both male and female, displayed stereotypically female nonverbal behavior, i.e., smiling and head canting, but male undergraduates also canted their heads more than female undergraduates. Results were explained in terms of the meaning of these gestures and the arts/science effect interpreted as indicative of the greater power/esteem of the sciences. The findings also address wider issues of the meanings of non-verbal behavior.     

Harmonic accents in inference of metrical structure and perception of rhythm patterns

Research on rhythmic structure is somewhat fragmented, due in part to differential use ofterminology and a lack of research on the timing of harmonic accents. In this study, a harmonic and a temporal accent were pitted against each other in such a way as to form different rhythm patterns. In addition, two harmonic conditions that varied in the frequency of chord presentations (i.e., the composite rhythm) but not in the frequency of chord changes (i.e., the harmonic rhythm) were presented. Musicians and nonmusicians were requested to report perceived rhythm patterns inan attempt to determine the relative salience of the harmonic and temporal accents. In addition, a behavioral measure of the perceivedmeter was taken. Results indicated that the location of chord changes was the main determinant of subjects’ rhythmic perceptions and the perceived onset of a measure. Furthermore, although subjects primarily inferred different meters based on the composite rhythm, an interaction of metrical and rhythmic choices was found, indicating that perception ofrhythm patterns and inference of metrical structure may notalways be independent.