Achieving consistency: A Study of basketball officiating

This study investigates the characteristics of professional basketball referees which can account for their successful or unsuccessful performance on the court. Several role inactment skills such as achievement via independence contribute to the prediction of this performance. The main determinant identified, however, is at the group or organizational level. Superior referees have less interindividual variance than do average or relatively unsuccessful referees. This result is discussed in terms of the role requirements of performance in this case. Interpersonal consistency of judgment is relied on for matters permitting only consensual validity. Extensions of these findings to other role enactments are suggested.     

Percentage body weight and the successive negative contrast effect in rats

In two runway experiments employing rats the successive negative contrast effect was evaluated for animals maintained at high or low body weights. In both experiments the effects on performance of shifting reward magnitude were independent of body weight. These results contrast with those of previous studies in which the successive negative contrast effect occurred only under low body weight. It was suggested that when conditions are maximal or near maximal for production of the successive negative contrast effect, as they were here but not in previous investigations, body weight will not influence the size of this effect.     

Moderation of the effects of job enrichment by participation: A longitudinal field experiment

In a 2 × 2 field experimental test of L. R. Hackman and G. R. Oldham's (1980, Work redesign, Reading, MA: Addison-Wesley) task characteristic model, the moderating effects of a contextual variable, participation, on job redesign were examined. Seventy-six desk receptionists participated in the redesign of their jobs or did not, and/or their jobs were actually redesigned or not. The results found significant main effects of job redesign on several measures of satisfaction. Participation was more limited in its effects, only affecting one of the satisfaction measures. However, both factors significantly affected turnover. In addition, contrary to predictions from the model, employee participation did not enhance the effects of enriched work. The results are discussed in terms of revisions to the theory and the practice of job redesign.     

Prosodic disturbance in aphasia: Vowel length in Thai

The aim of this study is to determine to what extent a phonologically contrastive function of the prosodic feature of length is resistant to impairment in aphasia. The language chosen for investigation is Thai, a language which contrasts short and long vowels. Subjects included two Broca aphasics, one transcortical motor aphasic, one Wernicke aphasic, one conduction aphasic, one nonaphasic right-brain-damaged patient, one nonaphasic cerebellar dysarthric patient, and five normal controls. The subjects read a list of words containing short and long vowels. Vowel durations were measured from spectrograms. The results showed that the timing of vowel duration for signaling the contrast between short and long vowels remains relatively intact in nonfluent as well as fluent aphasic patients. These data are brought to bear on issues concerning the specialization of the left hemisphere for temporal processing, the contribution of the right hemisphere to the processing of nonaffective components of prosody, the nature of prosodic disturbance in Broca's aphasia and cerebellar dysarthria, and the separate disruption of prosodic features.     

Operant techniques used in stuttering therapy: A review

This article reviews research concerning the use of operant conditioning in stuttering therapy, and discusses the clinical implications of this literature. In order to be considered for this review, a report had to treat the findings of research specifically designed to use operant conditioning in the manipulation of speech disfluency. This body of experimental literature clearly indicates that operant management techniques can effectively reduce stuttering with punishment of disfluencies producing more notable results than reinforcement of fluent responses. Operant conditioning is an effective means of modifying stuttering behavior and should be more visible in terms of procedures used by speech therapists.     

Do children have to remember to reason? A fuzzy-trace theory of transitivity development

An idea that has become commonplace in the literature on cognitive development is that the solution of thinking and reasoning problems requires that children retain accurate representations of certain background facts in short-term memory. This reasoning/remembering hypothesis is reexamined with reference to the one childhood cognitive task for which the validity of the hypothesis seems to be firmly established, transitive inference. Although the hypothesis says that children's transitive inferences are critically dependent on memory for the initial premise information, it is shown in six experiments that transitivity and premise memory are independent abilities in children. A fuzzy-trace theory is developed to explain this surprising independence effect. The theory assumes that children retain only degraded, schematic representations (fuzzy traces) of the overall pattern of an ordered series and that performance on subsequent test trials is mediated by processing operations that flesh out vague pattern information. Some further experiments that were designed to test various predictions of the fuzzy-trace theory are reported. Last, it is shown that reasoning and remembering are independent abilities in some other childhood cognitive tasks for which the initial background facts are not logically inescapable components of the eventual solution. These reasoning/remembering independence effects argue for an increased emphasis on encoding selectivity in theories of cognitive development.     

Uncovering mental processes with factorial experiments

The analysis of reaction time (RT) additivity and interactions via factorial manipulation is a widely used and potentially powerful tool for elucidating mental processing; however, current implementation is limited by the scope of systems for which predictions are available, as well as statistical weakness. Predictions for an expanded set of system dimensions (serial/parallel, independent/dependent, and selective/nonselective influence) are given. The theorems are not limited to particular families of distributions. Statistical considerations are examined in the context of an exemplary nonadditive parallel system which adequately fits “additive” data but will only be rejected as additive when power is increased beyond the traditional criteria.     

Construction and validation of a physician career development inventory

The development and psychometric characteristics of the Medical Career Development Inventory (MCDI) are described. The MCDI represents the initial construction of a career maturity measure for a homogeneous population of adults who encounter a common set of vocational development tasks. The inventory is intended to measure both degree of vocational development and readiness to cope with the developmental tasks encountered in a physician's career. The MCDI includes 35 items that address coping behaviors germane to dealing with the vocational tasks constituting the career development continuum of physicians. Initial evaluation of the MCDI's psychometric properties with a sample of 160 student-physicians supported the content validity of the items, construct validity of the scales, and criterion validity of the inventory.     

How big is big? Relative and absolute properties in memory

Previous studies of semantic memory have overlooked an important distinction among so-called “property statements”. Statements with relative adjectives (e.g., Flamingos are big) imply a comparison to a standard or reference point associated with an immediate superordinate category (a flamingo is big for a bird), while the truth of statements with absolute adjectives (e.g., Flamingos are pink) is generally independent of such a standard. To examine the psychological consequences of this distinction, we asked subjects in Experiment 1 to verify sentences containing either relative or absolute adjectives embedded in either predicate-adjective (PA) constructions (e.g., A flamingo is big (pink)) or predicate-noun (PN) constructions (e.g. A flamingo is a big (pink) bird), where the predicate noun was the immediate superordinate. Reaction times (RTs) and errors for relative sentences decreased when the superordinate was specified, but remained constant for absolute sentences. These data also suggest that the truth value of relative sentences depends, not just on the superordinate, but also on a more global standard for everyday, human-oriented objects. Experiment 2 extends these results in showing that ratings of the truth of relative sentences are a function of the difference in size between an instance and its superordinate standard (e.g., between the size of a flamingo and that of an average bird) and the difference between the instance and the standard for everyday objects. Experiment 3 replicated these findings using reaction time as the dependent measure.     

Interactive effects of writing and reading a persuasive essay on attitude change and selective exposure

Subjects wrote an essay either supporting their own position on an issue or irrelevant to that issue. Subsequently, they received a communication that either supported or opposed their position, and that either claimed to present the only reasonable position or acknowledged the viability of alternative positions. Then, they reported their own beliefs in the position being advocated, and finally were given an opportunity to obtain subsequent information that either supported or opposed this position. Attitude change in the direction of a proattitudinal communication occurred only when both (a) this communication asserted that only the position advocated was defensible and (b) subjects had previously written a proattitudinal essay themselves. Moreover, either of these factors was sufficient to prevent attitude change in the direction of a counterattitudinal communication. Data supported predictions based upon a joint consideration of commitment and reactance effects. Subjects' subsequent preference for supporting over opposing information was greater when they had written a supporting essay than when they had not, greater when they had read an opposing communication than when they had read a supporting one, and greater when the communication they read was presented as stating the only reasonable position, no matter which position it advocated.