A comparison of concept formation strategies in pattern recognition tasks

We used two experiments to explore the effects of two kinds of strategies (nonanalytic and analytic) in concept formation. In Experiment 1, nonsense shapes were used as stimuli, which created ill-defined categories of concepts to be discovered by the subjects. In Experiment 2, highly recognizable geometrical patterns were used as stimuli, hereby placing an emphasis on the identification of highly salient categories of concepts. Subjects were better able to classify stimuli correctly in both experiments relying on memory (nonanalytic strategy) than on rule learning (analytic strategy). Here we discuss implications of nonanalytic strategy for understanding the nature of creativity.     

Variation in performance on auditory and visual monitoring tasks as a function of signal and stimulus frequencies

Observers were required to detect double jumps of a diffuse light spot jumping in a circular pattern and more intense noise pulses in a pulse train. Seven groups performed at different combinations of stimulus and signal frequencies, higher signal frequency/stimulus frequency ratios, and lower stimulus frequencies. Stimulus frequency was a more potent determiner of performance than signal frequency, and performance was not invariant within a given signal frequency/stimulus frequency ratio. Correlations of dependent measures were also examined.-Results are discussed with reference to various theories of vigilance behavior.     

Gender differences in depression in children as a function of motivational orientation

Based on previous theoretical and empirical analyses, the present study examined two hypotheses. First, we hypothesized that children who have an extrinsic motivational orientation, i.e., children who perform schoolwork for approval or fear of evaluation, would be more depressed than intrinsics, who are generally more interested in learning and exhibit the desire to obtain mastery over challenge. Second, based on data showing that girls are more likely to be extrinsic than boys, we hypothesized that girls would also be more depressed than their male counterparts. The data proved strong support for the hypotheses. In our discussion, we highlight the need for further research to examine the causal relation among motivational orientation, gender, and depression to develop social-developmental theories and clinical interventions for depressed, extrinsic girls and boys.     

Attention as a cueing function during kindergarten children's dimensional change task performance

The purpose of this experiment is to test whether shift flexibility in kindergarten children is a joint function of rule‐usage and inhibition of attention. Sixty‐six children were given either a distraction or facilitation condition in a computerized version of the dimensional change card sort task. In the distraction condition, the background of the post‐shift matching stimulus was inconsistent with the relevant matching dimension. In the facilitation condition, the background of the post‐shift matching stimulus was consistent with the relevant matching dimension. Results revealed that children made few errors in the standard version of the shift task, thereby supporting Cognitive complexity and control theory's contention that 5‐year‐old children shift easily across dimensions due to their use of higher‐order setting rules to solve contradictions. The proportion of errors increased however in the distraction condition suggesting that attention to the background interfered with children's ability to shift between dimensions. Therefore, these data provide evidence that refocusing attention to dimensions along with rule‐use processes affect shift flexibility and argue for the inclusion of both factors into theoretical accounts of shift performance. Copyright © 2009 John Wiley & Sons, Ltd.     

Exploratory behavior as a function of motivational orientations and task conditions

Twenty-four boys and 24 girls from the 5th and 10th grades, one-half of whom were predominantly intrinsically motivated (IM) while the other half were predominantly extrinsically motivated (EM), were given an interesting task under task-imposed, task-offered and neutral conditions, and their exploratory behavior was observed during an intermission period. IM Ss both explored less and showed less satisfaction under the task-imposed condition than under the other two conditions, preferred a high level of difficulty across all conditions and showed higher diversive curiosity at 15 yr than at 10 yr of age. EM Ss explored about the same amount in all conditions, were less satisfied under the task-imposed condition than under the other conditions, preferred lower-difficulty tasks in the neutral condition than in the other conditions, showed more diversive curiosity at 10 yr than at 15 yr of age and showed more specific curiosity at 15 yr than at 10 yr of age. Personality integration and variation seeking appear to characterize relatively IM persons more than relatively EM persons. Age and gender differences are discussed, and conceptual analysis of performance expectations as a function of IM, task conditions and personality domains is offered.     

The Cognitive Reflection Test as a predictor of performance on heuristics-and-biases tasks

The Cognitive Reflection Test (CRT; Frederick, 2005) is designed to measure the tendency to override a prepotent response alternative that is incorrect and to engage in further reflection that leads to the correct response. In this study, we showed that the CRT is a more potent predictor of performance on a wide sample of tasks from the heuristics-and-biases literature than measures of cognitive ability, thinking dispositions, and executive functioning. Although the CRT has a substantial correlation with cognitive ability, a series of regression analyses indicated that the CRT was a unique predictor of performance on heuristics-and-biases tasks. It accounted for substantial additional variance after the other measures of individual differences had been statistically controlled. We conjecture that this is because neither intelligence tests nor measures of executive functioning assess the tendency toward miserly processing in the way that the CRT does. We argue that the CRT is a particularly potent measure of the tendency toward miserly processing because it is a performance measure rather than a self-report measure.