Sex bias in hiring: Effects of job demands and applicant competence

Managers in a large corporation evaluated application materials representing one of eight hypothetical job candidates. In order to examine the effects of two types of information on sex bias, three factors were manipulated in a factorial design: (1) Applicants were either male or female engineers; (2) they appeared highly competent or moderately competent based on academic performance; (3) they were applying for an engineering job that entailed either technical engineering tasks or managerial tasks in addition to the technical tasks. Greater discrimination against women occurred in evaluations for the technical-managerial job, even with highly competent applicants. These results are explained in terms of ambiguity: Because it was not obvious that applicants would succeed on the additional managerial tasks, the evaluators resorted to stereotypes in order to make their predictions.     

An empirical note on the role of verbal labels in motor short-term memory tasks

Previous studies of motor short-term memory have shown that when a criterion movement on a semicircular positioning task is accompanied by an appropriate verbal label (a clock-face position), recall of the movement is more accurate than when only the movement is presented. This increased accuracy could be due to either the additional spatial information provided by the label or enhanced retention of the movement information. These two alternatives cannot be distinguished on the basis of previous studies because the studies have not evaluated movement accuracy following presentation of the label alone. The present study employed such a condition in addition to the movement-only and movement-plus-label conditions to distinguish between the two hypotheses. In all conditions, subjects were asked to move to the criterion position after a retention interval of either 5 sec or 60 sec. Evidence indicated that subjects who received both the label and the movement tended to use the spatial information provided by the label at the 60-sec interval. The evidence did not indicate that the verbal label actually enhanced retention of the movement information.     

A behavioral analysis of peaking in residential electrical-energy consumers

This study was concerned with "peaking", which is the tendency for electrical-energy users to consume at high rates for brief periods during the day. Peaking results in the inefficient use of generating facilities, which may lead to unfavorable effects on the environment, such as the construction of new energy producing facilities or the activation of older, less safe, generating units. A continuous data collection system to monitor consumption of electrical energy was installed in the homes of three volunteer families. Information, feedback, and incentives were evaluated for their effects on peak energy consumption. A combination of feedback plus incentives was most effective and reduced peaking about 50%. Removal of experimental treatments resulted in a return to pre-treatment patterns of consumption.     

Determinants of two-choice reaction-time patterns for same-hand and different-hand finger pairings

Several studies of two-choice reaction times have compared situations in which the alternative responses are fingers from one hand (the same-hand pairing) or one finger from each hand (the different-hand pairing). Two patterns of results have been obtained: (a) equivalent reaction times for the same-hand and different-hand pairings and (b) faster reaction times for the different-hand pairing. Previously, these outcomes have been attributed to the adoption of different response-preparation strategies when response pairs are constant (low response-pair uncertainty) versus when they are varied from trial to trial (high response-pair uncertainty). However, response-pair uncertainty has been confounded with whether only the two relevant fingers were placed on response keys or whether more than two fingers were. Experiment 1 of the present study demonstrated that finger placement, rather than response-pair uncertainty, determines which reaction-time pattern is obtained. Experiments 2 and 3 investigated the nature of the finger-placement effect by placing the fingers that were irrelevant for the task on response keys or on immovable blocks. The experiments indicated that the crucial factor is the number of fingers on active response keys, with the type of preparation being different when only two fingers are on keys rather than when more than two fingers are.     

Mother-child verbal interchange: A descriptive study of young children's verbal behavior

The theoretical importance of the linguistic data available to the child in his natural environment has been increasingly emphasized in recent work on child language acquisition. This study sought to describe a portion of such data as contained in maternal verbal behavior and to analyze its influence on the child's usage of speech. The subjects were five 21-month-old children and their mothers. The mother-child verbal interchange was recorded during free-play situations carried out both at the subject's home and in a playroom. The interactive patterns of mother-child utterances were analyzed with regard to the kind and frequency of verbalizations, and the temporal intervals between them. Results showed that the temporal pattern of mother-child interchanges was characterized by significantly shorter pauses (<2 s) for mothers than for children. A variation in this pattern, consisting of pauses longer than 4 s, was associated with certain kinds of ongoing mother-child verbal behaviors. Thus mothers showed selectiveness, in varying degrees, in responding to the child's utterances, and their verbal responses had differential effects on the child's subsequent verbal performance. These effects were described as “initiating”, “maintaining”, or “ending” verbal chains, or else as “non-reacted” utternances. Moreover, the amount of verbalization by the children was positively correlated with the proportion of the mother's output that consisted of immediate responses to the child, and not with the total verbal output.     

Testing independence in two-way contingency tables with data subject to misclassification

The misclassification process is represented by a stochastic matrix containing the probabilities that an individual who belongs in one cell is counted as belonging to another (or perhaps the same) cell. These probabilities are supposed known. If misclassification in the row direction is independent of that along the column variable then the size of the usual chi-square test is unchanged. It is shown how to calculate loss of power in this case and also how to calculate the change in size of the test if the errors are not independent. A modified test criterion is suggested when errors are not independent and a numerical example is included.     

Assessing Parental Readiness to Change: A Psychometric Evaluation of the READI-SF in a Community Sample

Engagement in behavioral parent training programs continues to be a barrier to service delivery. Parental readiness is an important construct for understanding parental engagement in parent training services, as these programs place a high level of action-oriented demands on caregivers. The present study examines the performance of one parental readiness measure, the Readiness, Efficacy, Attributions, Defensiveness, and Importance Scale—Short Form (READI-SF) in a community-based sample. Participants included 103 families of children ages three to seven recruited from an urban charter school. Mothers completed an abbreviated version of the READI as well as indices of child disruptive behavior and a second measure of parental readiness. The psychometric properties and factor structure of the READI-SF are explored as well as indices of reliability and validity. Exploratory factor analysis revealed a three-factor model of readiness to change, treatment readiness, and perceived importance of the problem. Analyses also supported the validity and clinical utility of the measure, as READI-SF scores were found to predict attendance at a one-time parenting group. Lastly, the study examines the relationship between parental readiness and child disruptive behavior. Limitations and future directions are discussed.