Personality attributes of volunteers and paid workers engaged in similar occupational tasks

The authors' primary aim was to determine whether Australian volunteers and paid workers who were engaged in similar activities differed on aspects of a 5-factor model of personality. Their secondary aim was to determine whether personality attributes were similar between volunteers involved in different activities. The participants were 36 volunteer food preparers, 38 paid food preparers, and 31 volunteer firefighters. Each participant completed a personality inventory (P. T. Costa & R. R. McCrae, 1992) and a brief demographic questionnaire. As predicted, the volunteer food preparers were more agreeable and extraverted than were their paid counterparts. The two volunteer groups differed only on the personality facet of assertiveness. The results support the existence of a constellation of traits that constitute a volunteering disposition; such traits may be relatively stable across time and situations. These results have scientific and practical implications for the literature on volunteering.     

Self-esteem and performance on word tasks

The authors investigated word-task performance of 192 postgraduate Indian women, grouped according to high or low self-esteem, after different causal attributions for failure. The subsequent performance of the low-self-esteem (LSE) participants improved after reattribution training. When the LSE participants were induced to attribute their prior failure to external causes, the external attribution not only reduced their natural tendency toward self-blame but also broke the self-defeating cycle, thereby enabling them to improve their subsequent performance.     

Motor performance and concurrent cognitive tasks

Twenty students tapped between two targets while concurrently performing either a verbal or a visuospatial cognitive task. Speed of tapping and consistency revealed right- and left-hand disruption during solving either the con-current verbal or visuospatial task respectively. Accuracy of performance in terms of hitting the targets was not selectively disrupted by the cognitive activity. The results are discussed in terms of an attentional model of lateralization of cerebral function.     

Impact of physical fitness on strategy development in decision-making tasks

Data from 30 female subjects indicated that a 17.3% increase in a physical fitness index improved by 12% to 68% the information processing and decision-making capabilities of the subjects. The changes in physical fitness did not affect the performance on a variety of other tasks.     

Effects of secondary tasks on search performance

Summary Two experiments studied the effect of secondary task load on continuous visual search. Two effects were observed when a secondary task was applied. Search speed (which is assumed to reflect the efficiency of nontarget rejection) was impaired, whereas target detection distance (which presumably reflects the efficiency of target detection) increased. These findings are explained in the framework of a two-process model of visual search which assumes that two operations are performed simultaneously during each fixation, that is, automatic detection and controlled search. The secondary task interferes with the operation of controlled search which reacts to this impairment by way of a compensatory slow-down of search speed. This gain in time also benefits the operation of automatic detection which converts the temporal gain into a spatial extension of the area under its control.     

Comparing performance in discrete and continuous comparison tasks

The approximate number system (ANS) theory suggests that all magnitudes, discrete (i.e., number of items) or continuous (i.e., size, density, etc.), are processed by a shared system and comply with Weber's law. The current study reexamined this notion by comparing performance in discrete (comparing numerosities of dot arrays) and continuous (comparisons of area of squares) tasks. We found that: (a) threshold of discrimination was higher for continuous than for discrete comparisons; (b) while performance in the discrete task complied with Weber's law, performance in the continuous task violated it; and (c) performance in the discrete task was influenced by continuous properties (e.g., dot density, dot cumulative area) of the dot array that were not predictive of numerosities or task relevant. Therefore, we propose that the magnitude processing system (MPS) is actually divided into separate (yet interactive) systems for discrete and continuous magnitude processing. Further subdivisions are discussed. We argue that cooperation between these systems results in a holistic comparison of magnitudes, one that takes into account continuous properties in addition to numerosities. Considering the MPS as two systems opens the door to new and important questions that shed light on both normal and impaired development of the numerical system.     

Field independence and performance on ball-handling tasks

Subjects were administered the Children's Embedded Figures Test and four ball-handling tests. Pearson product-moment correlations were low between the measures. Girls scored significantly higher than boys on the embedded figures test while boys scored significantly higher than girls on the striking and throwing tests.     

Diminished performance on response-selection tasks in Type 2 diabetes

Comparisons of visual perception, response-selection, and response-execution performance were made between Type 2 diabetes mellitus patients and a matched nondiabetic control group. 10 well-controlled male patients with Type 2 diabetes without diabetic complications (M age 58 yr.) and an age and IQ-matched non-diabetic control group consisting of 13 male healthy volunteers (M age 57 yr.) were included. Significant differences were found only between the two groups on response-selection performance, which concerns the selection and preparation of an appropriate motor action.     

Importance effects on performance in event-based prospective memory tasks

In the present study we manipulated the importance of performing two event-based prospective memory tasks. In Experiment 1, the event-based task was assumed to rely on relatively automatic processes, whereas in Experiment 2 the event-based task was assumed to rely on a more demanding monitoring process. In contrast to the first experiment, the second experiment showed that importance had a positive effect on prospective memory performance. In addition, the occurrence of an importance effect on prospective memory performance seemed to be mainly due to the features of the prospective memory task itself, and not to the characteristics of the ongoing tasks that only influenced the size of the importance effect. The results suggest that importance instructions may improve prospective memory if the prospective task requires the strategic allocation of attentional monitoring resources.     

Relations between self-efficacy beliefs,self-presentation motives,personal task goals,and performance on endurance-based physical activity tasks

We conducted two studies with the aim of examining the relations between self-presentation motives and physical activity task performance. In study 1, prior to performing an endurance-based physical activity task, 133 undergraduate participants (M_age = 20.89, SD = 5.21) reported acquisitive-agentic and protective-agentic self-presentation motives alongside task self-efficacy, self-presentational efficacy, and their personal task goals. Using a different endurance-based physical activity task in study 2, we also assessed undergraduate participants' (n = 150; M_age = 20.23, SD = 3.34) dispositional exercise-related self-presentation motivation alongside the variables measured in study 1. Bayesian path analyses revealed indirect relations between agentic self-presentation motives and task performance via participants' personal task goals. Findings also indicated that agentic self-presentation motives may act as intermediaries in indirect pathways linking efficacy beliefs and dispositional exercise-related self-presentation motivation to goal processes and task performance. The results contribute to a more nuanced understanding of the relationship between self-presentation motivation and task performance.     

Effects of caffeine on performance of low intensity tasks

31 college age men and women who consume less than three caffeinated beverages per week agreed to participate as subjects in research on the effects of acute caffeine intake on low intensity task performance. All subjects performed two randomly administered test conditions: (1) caffeine (5 mg/kg) and (2) placebo on separate visits following an initial 1-hr. orientation visit. Subjects were administered the beverage 30 min. prior to performing 12 separate tests assessing basic mathematics, simple response, logical reasoning, hand-eye coordination, and spatial and assembly skills. The Spielberger State Anxiety test was administered immediately after consuming the test beverage and once again at posttest. Analysis showed that caffeine did not significantly affect performance on all tests with the exception of the peripheral awareness (hand-eye coordination) test on which performance was higher after ingesting caffeine. The placebo treatment produced no effect on state anxiety, which contrasted with a significant rise in anxiety after caffeine consumption. State anxiety values were significantly greater after caffeine treatment relative to the placebo at pretest, and this difference persisted at posttest. These results demonstrated that the dose of caffeine increased scores on state anxiety for individuals who consumed less than three caffeinated beverages weekly but had very little effect on performance of low intensity tasks, except for a hand-eye coordination test involving peripheral awareness. Perhaps longer continuous performance of more demanding tasks would be more sensitive.     

Thinking aloud performance: Individual consistencies over tasks

Previous research (Gilhooly, 1987) indicated considerable individual consistency in quantity and quality of thinking aloud performance over three 8-puzzle tasks. The present study investigated the consistency of individual thinking aloud performance over two types of tasks. One type was largely spatial (the 8-puzzle) and the other largely verbal (the Poisoned Foods task). Considerable individual consistency in thinking aloud performance was found within each task type and, more importantly, between types of task. Thus, subjects who produced lengthy and complete protocols on the 8-puzzle problems also did so in the Poisoned Foods task. These results are discussed in the context of Ericsson and Simon’s (1984) model of thinking aloud.     

Thinking aloud performance: Individual consistencies over tasks

Previous research (Gilhooly, 1987) indicated considerable individual consistency in quantity and quality of thinking aloud performance over three 8-puzzle tasks. The present study investigated the consistency of individual thinking aloud performance over two types of tasks. One type was largely spatial (the 8-puzzle) and the other largely verbal (the Poisoned Foods task). Considerable individual consistency in thinking aloud performance was found within each task type and, more importantly, between types of task. Thus, subjects who produced lengthy and complete protocols on the 8-puzzle problems also did so in the Poisoned Foods task. These results are discussed in the context of Ericsson and Simon’s (1984) model of thinking aloud.     

Dissociative tendencies and memory performance on directed-forgetting tasks

The current article presents two studies that aimed to replicate DePrince and Freyd's (2001, 2004) studies demonstrating that high and low dissociators differentially recall neutral and trauma words under conditions of varying cognitive load. We did not find this effect. This lack of replication was apparent for both free recall and word recognition memory and in both studies. In effect, we found little evidence to support betrayal trauma theory, yet observed increased memory fallibility, as demonstrated by lower general recall and (in one study) commission errors, in high dissociators.     

Eye movements and performance during bilateral tracing tasks

To examine the role of current visual monitoring in the between-hand differences in skilled movements, eye movements and errors during bilateral tracing tasks were analyzed in 10 subjects. When subjects traced a horizontal course abductively with both hands, the subject's gaze followed the movement of the right hand, and more errors were observed on the left hand. When subjects traced a vertical course, where fine motor control for alteration of movement direction was necessary, more errors were shown on the left hand despite the alternate visual scan of the two hands. The results were interpreted as showing that the between-hand differences in skilled movements are primarily due to the left hand's poor ability in motor output, and that the differential efficiency in the use of visual monitoring becomes an important factor in the between-hand differences when symmetrical movements of both hands with a low degree of difficulty are required.     

Children's causal attributions for performance on sex-stereotypic tasks

In two experiments, third, fifth, and eleventh graders attributed males' and females' successes and failures on sex-stereotypic tasks to (a) task difficulty, (b) effort, (c) luck, or (d) skill. Male and female children responded similarly within and across age. Attributions for successes varied with congruity of actor and task stereotypes; effort was emphasized for sex-inconsistent relative to sex-consistent performance. However, over-riding sex-of-actor biases emerged in explanations for failures, suggesting failures were treated as anticipated outcomes for females. Results are considered in terms of maintenance of sex-role stereotypes beginning early in childhood.A portion of the first experiment reported in this article was presented at the annual meeting of the Eastern Psychological Association, Washington, D. C., March 1978.