The Validity of the Employment Interview: A Meta-Analysis

The interview is the most widely used personnel selection method, but has revealed low reliability and validity compared with other selection methods (Mayfield 1964; Ulrich and Trumbo 1965; Schmitt 1976; Arvey 1979). Thirty-one studies on the validity of the interview were meta-analyzed. The result was an average validity coefficient of .27. The estimated true validity of the interview was calculated to be .38. These values indicated that the interview has moderate validity as a personnel selection device. Six characteristics of the interview were also examined in relation to the validity of the interview: structure of the interview; number of interviewers; length of the interview; gender of the applicant pool; blue-collar/white-collar jobs; and use of college students versus job applicants. The six study characteristics accounted for 30.9% of the variance in the validity of the interview. Structure of the interview appeared to be the only characteristic that moderated the validity of the interview. The relationship of this study to other meta-analyses of the employment interview is discussed.     

Instrumental and hostile aggression in childhood disruptive behavior disorders

An analogue task of instrumental and hostile aggression during a competitive game was evaluated in a sample of clinically-referred 8-to 12-year-old aggressive boys. Similar to a prior task in a normative sample (Having, Wallace, & La Forme, 1979), both types of aggression increased during provocation as compared to baseline, indicating the success of the provocation manipulation, with moderate correlations between the two aggressive responses. The aggressive group with attention-deficit hyperactivity disorder (ADHD) and the aggressive group without ADHD each had higher rates of instrumental aggression than controls. Only the aggressive/ADHD group had higher rates of hostile aggression than controls. Parent Child Behavior Checklist ratings indicated a modest but significant unique relationship between instrumental aggression and delinquency. The high rate of both types of aggression in the aggressive/ADHD group suggests that comorbid ADHD and aggression may result in qualitative differences in aggressive behavior. The high rate of hostile aggression in the aggressive-ADHD group supports theoretical assumptions regarding the relationship of hostile aggression to poor impulse control.This research was supported in part by grants to the first author from the Medical College of Pennsylvania, the Allegheny-Singer Research Institute, NIMH First Award (MH4682), and support from NICHD Mental Retardation Research Center Core Center Grant (DH26979); and NIMH grants (MH40364 and MH00590) awarded to the second author. The authors are grateful to Marianne Torchinsky and Abby Michaleski for assistance in data collection. Preliminary data were presented at the annual meetings of the Association for Advancement of Behavior Therapy, New York, November 1988, and the Society for Research in Child and Adolescent Psychopathology, Costa Mesa, CA, January 1990.     

Animal welfare and individual characteristics: a conversation against speciesism

It seems impossible for a human being not to have some point of view concerning nonhuman animal (hereafter animal) welfare. Many people make decisions about how humans are permitted to treat animals using speciesist criteria, basing their decisions on an individual's species membership rather than on that animal's individual characteristics. Although speciesism provides a convenient way for making difficult decisions about who should be used in different types of research, we argue that such decisions should rely on an analysis of individual characteristics and should not be based merely on species membership. We do not argue that the concept of species is never useful or important. To make our points, we present a conversation among a skeptic, an agnostic, and a proponent of the view that our moral obligations to an animal must be based on an analysis of that individual's characteristics. In the course of the discussion, concepts such as personhood, consciousness, cognitive ability, harm, and pain are presented, because one's understanding of these concepts informs his or her ethical decisions about the use of animals by humans.     

Two-stage model of visual backward masking: Sensory transmission and accrual of effective information as a function of target intensity and similarity

A functional model is used to describe the effect of target intensity and target-set similarity on backward visual masking. The model consists of two distinct stages of visual information processing. The first stage is related to sensory transduction and transmission and is assumed to require a finite and measurable amount of time during which performance-remains at chance. The second stage, associated with central processing, is characterized by a negatively accelerated growth function reflecting the accrual of effective information. Results show that the duration of the transmission stage is inversely related to target intensity. Surprisingly, the rate of information accrual is an interactive function of both target intensity and target-set similarity. The pattern of results is consistent with the interpretation that both intensity and similarity mediate their effect through a common mechanism—the accrual of effective information.     

Programming in natural language: A descriptive analysis

This study investigated the utility of natural language in specifying procedures. Performance of programmers was compared with that of nonprogrammers on two types of problems: a “real-world” ordering task and a computer like database search task. Programmers performed better than nonprogrammers in general, although overall differences between the groups were greater for the real-world problem domain. Analyses of protocols suggest that an unconstrained natural language programming environment is presently infeasible. Although constraints imposed in the problem specification do appear to improve performance, they alone are not sufficient to produce efficient natural language programming. It is argued that programming requires general problem solving strategies and that at least some aspects of such strategies may be dependent upon the specific language in which they are implemented.     

Chromatic information processing: Rate depends on stimulus location in the category and psychological complexity

Summary Colors are typically categorized, and color sensations can be conceived to lie on a continuum of psychological complexity from simple, sensations provoked by colors that fall near the centers of color categories and that convey predominately a single percept (like blue), to complex, sensations provoked by colors that fall near boundaries between color categories and that convey two percepts (like blue-green). In three experiments we assessed the effect of the location of colors in a category (their psychological complexity) on the rate at which observers identified and classified them. In Experiment 1, observers named category center colors faster than boundary colors. A subsidiary experiment with range-shifted stimuli showed that observers were not merely bisecting a stimulus continuum. In Experiment 2, observers classified a variety of category centers more rapidly than a variety of boundaries. In Experiment 3, observers who first practiced classifying color centers or boundaries as such later classified category centers faster than boundaries. A subsidiary experiment showed that this differential was not selective to particular response category labels. Neither Experiment 2 nor Experiment 3 showed any differential effect of visual field of presentation. The advantage of category center or simple over boundary or complex sensations in chromatic information processing is discussed in terms of the physiological sensitivity of the visual system to color.     

Police Perceptions of Alcohol Intoxication

The accuracy of police perceptions of alcohol intoxication was assessed by comparing officers' impressions of intoxication with quantitative Breathalyzer measurements of blood alcohol concentration (BAC). Eighteen police officers predicted the BACs of 36 students who had consumed either a high or low dosage of alcohol. Results indicated that the officers could not discriminate between students who had consumed either the high or low alcohol dosage. More specifically, the officers were reasonably accurate in their predictions of students in the low alcohol condition, but they strongly underestimated the degree of intoxication of students in the high dose condition.     

Comparative judgments of animal intelligence and pleasantness

Symbolic comparisons of animal intelligence and pleasantness were investigated in five experiments using words and pictures as stimuli. Symbolic distance effects occurred in all experiments. Picture-word effects depended on the experimental design. Mean intelligence comparison reaction time (RT) did not differ for pictures and words when the pairs were presented to independent groups. With repeated measures, mean RT was faster for pictures than for words, but only on the second block of trials. This involved an asymmetrical transfer effect, so that word comparisons on the first trial block greatly facilitated picture comparisons on the second block, whereas picture comparisons did not facilitate subsequent word comparisons. Pleasantness comparisons showed a similar asymmetrical transfer pattern but differed from intelligence comparisons in that the mean RTs were faster with pictures than with words, even with an infinite item set and without prior exposure to the other class of material. The results are discussed in terms of dual coding and other models of symbolic comparisons.