Components of Teamwork: Impact on Evaluations of Contributions to Work Team Effectiveness1

This study examined the relationship between Dickinson's (1993) components of teamwork and ratings of team members' contributions to team success. Undergraduate students (n= 179) each viewed 1 of 8 videotapes depicting a team interacting to solve the Winter Survival Problem. Participants then completed a 52-item questionnaire assessing the connection between teamwork components and perceptions of contributions to team productivity, team viability, teamwork, and overall team performance. With 1 exception, all of the teamwork components manipulated in the study significantly affected appraisals of several aspects of worker effectiveness. Furthermore, raters considered teamwork behaviors that provided direct assistance or direction to team members as being especially critical.     

Managerial Work, Job Analysis, and Holland's RIASEC Vocational Environment Dimensions

We examined relations between the environmental dimensions underlying Holland's theory of vocational choice and skill requirements, context characteristics, and task frequency ratings for managerial jobs. The Holland environmental constructs were measured by the recently developedPosition Classification Inventory(PCI). The task, skill requirement, and context variables were measured using traditional job analysis surveys. Ten judges provided estimates of the expected correlations between the job analysis variables and the Holland constructs. The profile of observed correlations was generally consistent with the judges’ expectations based on Holland's theory, providing support for both that framework and the construct validity of the PCI. The one Holland dimension for which the data were least consistent with predictions was “Realistic.” Results provide a detailed picture of the work content, skills, and context variables within managerial work that are likely to be associated with the RIASEC dimensions. Implications for management development are discussed.     

Increased regional cerebral glucose metabolism and semantic memory performance in Alzheimer's disease: A pilot double blind transdermal nicotine positron emission tomography study

Nicotinic receptor dysfunction and impaired semantic memory occur early in Alzheimer's disease patients (AD). Previous research implied that nicotine's ability to enhance alertness, arousal, and cognition in a number of nonclinical populations was a function of its ability to stimulate CNS nicotinic cholinergic receptors. In this study it was hypothesized that transdermal administration of nicotine would increase both regional cerebral glucose metabolism (rCMRglc) and semantic memory (as assessed by verbal fluency). Two mild AD and two elderly controls underwent positron emission tomography scanning during a double blind nicotinic agonist verbal fluency challenge procedure. rCMRglc increases occurred in both AD patients, but not controls. In the two AD patients, verbal fluency scores increased by an average of 17%. One elderly control's verbal fluency increased, and the other decreased. These findings suggest that nicotine's effect on metabolism and verbal fluency is due to its ability to stimulate the cholinergic system.     

College students' judgments regarding sexual aggression during a date

Effects of level of resistance and type of sexual behavior on judgments regarding sexual aggression on a date were studied. Participants were 138 female and 57 male college students who read one of six vignettes (three levels of resistance × two types of sexual behavior) describing a date in which unwanted sexual behavior occurred. Gender-neutral names (Chris and Pat) were used in the vignettes, and sex of aggressor and victim was not specified. Participants completed identical scales describing degree of disapproval of the aggressor's behavior from three different perspectives: their own viewpoint (Participant Rating), the victim's viewpoint (Victim Rating), and the aggressor's viewpoint (Aggressor Rating). Both Participant and Victim Ratings showed significant differences between levels of resistance, and significant but smaller differences due to participant gender. Participant ratings showed a significant but small difference between types of sexual behavior. The aggressor's overall behavior was labeled as date/acquaintance rape by 52.9% of participants for the vignette involving physical resistance and intercourse.     

Misconception and miseducation: Presentations of radical behaviorism in psychology textbooks

Behavior analysts have recently expressed concern about what appear to be misrepresentations of behaviorism in psychology textbooks. This paper presents an analysis of currently used textbooks in the areas of introductory, social, cognitive, personality, and developmental psychology that confirms this. Topics on which behavior analysis is most often misrepresented relate to the role of animal learning research, environmentalism, the "empty organism," language, and the overall utility of the approach. Because textbooks are often a major medium of interaction between the public and behaviorism, behavior analysts must work to correct these errors and to prevent possible negative consequences of widespread misunderstanding. Several potential solutions to these problems are presented that take into account current publishing practices and the monetary contingencies which support them.     

Jackknifing disattenuated correlations

The utility of the jackknife for constructing confidence intervals and testing hypotheses about the disattenuated correlation is evaluated for small samples. Computer simulations were used to generate the empirical sampling distributions of jackknife statistics for two sample sizes (30, 60), five values of the disattenuated correlation coefficient (1.00, .90, .80, .50, .00) and three pairs of reliabilities (.90, .80; .80, .80; .90, .50). The theoretical and cumulative proportions of jackknife statistics were compared at selected points in the appropriatet-distributions. The results obtained support the claim that the jackknife can be used to construct sensible confidence intervals. However, the jackknife possesses limited utility for testing hypotheses about the disattenuated correlation coefficient.This paper is based upon part of the author's doctoral dissertation (Rogers, 1971) completed at the University of Colorado. The author gratefully acknowledges Dr. Gene V. Glass for his interest and encouragement shown in completing this research.     

USING PRESCHOOL MATERIALS TO MODIFY THE LANGUAGE OF DISADVANTAGED CHILDREN1

Although language remediation programs have generally been conducted with the use of special materials in structured group settings, traditional preschool practice emphasizes “incidental teaching” incorporated into children's free play. To determine if incidental teaching practices could be effective in improving children's speech, this study investigated the spontaneous speech of 12 disadvantaged children during free-play periods over eight months of a preschool program. Whenever the children selected a preschool play material, they were prompted and required to ask for it, first by name (noun), then by name plus a word that described the material (adjective-noun combination), then by use of a color adjective-noun combination, and finally by requesting the material and describing how they were going to use it (compound sentence). As each requirement was made, the children's general use of that aspect of language markedly increased, but little change was noted in the amount or nature of the children's interactions with teachers or their use of a set of materials to which they had free access. This study demonstrates that preschool free-play periods can be powerful “incidental teaching” periods by capitalizing on moments when children seek new play materials.     

Reminder-induced recovery from blocking as a function of the number of compound trials

Conditioned lick suppression in rats was employed to examine changes in the associative status of a blocked stimulus as a function of the number of compound stimulus conditioning trials. In each of two experiments, prior tone-footshock pairings produced similar blocking of conditioned responding to the light element of a tone-light compound when either two or six compound trials were used. In experiment 1, two exposures to the light alone in a dissimilar context during the retention interval, i.e., a reminder treatment, resulted in a restoration of responding to the light which was complete and similar for animals receiving two or six compound trials. This indicated that latent acquisition with respect to the blocked stimulus was largely complete after two compound trials. Because of a potential ceiling effect for reminder-induced recovery from blocking, Experiment 2 employed an attenuated reminder (one light exposure). This reminder reversed the blocking when six, but not when two, compound trials were used. These results suggest that, after latent acquisition to the blocked stimulus is complete, the blocked stimulus continues to be processed during additional compound stimulus conditioning trials, with a consequent latent facilitation of retrieval of associations to the blocked stimulus.     

IN VIVO LANGUAGE INTERVENTION: UNANTICIPATED GENERAL EFFECTS

After observing the lack of generalization of language trained in highly structured training sessions using established behavior modification techniques, “incidental teaching” procedures were developed to change the use of specified language behaviors in the natural environment. This paper reports an analysis of the general changes in the language, other than that specifically targeted by the incidental teaching procedures, used by disadvantaged preschool children. The daily language samples of disadvantaged children involved in a previously reported experiment to increase compound sentence usage were reexamined and compared to comparable records of other disadvantaged children and of middle-class children of college parents in order to assess possible general effects of the intervention program. Whereas the language that both groups of comparison children used changed little across the preschool year, the amount of talking by the children in the experimental program increased markedly. Their use of more elaborate vocabulary and more elaborate sentences also increased in direct proportion to the increases in overall language use, such that both language use and language elaboration in the experimental group of children changed from a pattern similar to the comparison group of disadvantaged children to a pattern similar to the comparison group of middle-class children. It is argued that some general features of the incidental teaching procedure—differentially attending to child overtures and responding relative to the child's selected topic (reinforcer)—contributed to the increase in overall language use beyond the specific language behavior targeted, and that this increase in the probability of children's talking itself resulted in the substantial increases in elaboration seen in the children's spontaneous language. Because, at least in children with fairly well-developed language repertoires, language use is contextually controlled, talking more involves talking in more varied and complex contexts, which inevitably produces the use of more elaborate language.     

BEHAVIORAL NUTRITION: CONSUMPTION OF FOODS OF THE FUTURE BY TODDLERS1

Behavioral measures of food consumption and tasting were combined with nutrient analysis of foods served at a toddler day-care center to determine whether children at the stage of initial exposure to adult diets would accept textured vegetable protein (TVP) and nonfat dry milk as well as they ate other sources of protein and calcium. Main dishes were prepared alternately with TVP, meat, or neither; others were prepared with or without nonfat dry milk. The variation in ingredients appeared not to affect the amount children ate, the percentage sampling the foods, or the percentage eating half a portion or more. Dishes made with TVP increased protein intake comparable to the amount obtained with meat supplements, and calcium intake increased with nonfat dry-milk supplements. In light of these findings, it appears that TVP and nonfat dry milk are practical alternative sources of protein and calcium in menus for young children.