Identification of Matrices in Science and Engineering

Engineering science is a scientific discipline that from the point of view of epistemology and the philosophy of science has been somewhat neglected. When engineering science was under philosophical scrutiny it often just involved the question of whether engineering is a spin-off of pure and applied science and their methods. We, however, hold that engineering is a science governed by its own epistemology, methodology and ontology. This point is systematically argued by comparing the different sciences with respect to a particular set of characterization criteria. This revised version was published online in August 2006 with corrections to the Cover Date.     

Types of creativity

Psychonomic Bulletin & Review - Imagine the impact if we were to understand, and thus could reliably enhance, something – anything – about how creativity works in the brain. The...     

Socioeconomic background,nonverbal IQ and school absence affects the development of vocabulary and reading comprehension in children living in severe poverty

Few studies have examined how socioeconomic status (SES) affects two essential parts of human development, namely vocabulary and reading comprehension, in children facing severe poverty. The Roma population is the largest minority group in Europe, the majority of whom live in severe poverty. This study compared the development of 322 Roma children with the development of 178 non‐Roma children, between the ages of 7 and 10 years, living in Romania. The Roma children had poorer initial vocabulary and reading comprehension skills as well as slower growth rates for both compared to the non‐Roma children. Importantly, SES had a direct influence on growth in both reading comprehension and vocabulary. The effect of SES was partly mediated by school absence and nonverbal IQ. This is a powerful finding since it suggests that poverty may have detrimental effects not only on reading but also on the development of verbal abilities.     

False memory for associated word lists in individuals and collaborating groups

Using the Deese/Roediger-McDermott (DRM) paradigm, we investigated recall of presented and nonpresented associated words by collaborating groups, nominal groups, and individuals. In Experiment 1, participants recalled individually and then recalled in collaborating groups. Nominal groups made up of individual recall produced more presented and nonpresented associated words than did collaborating groups. Collaborating groups recalled more presented words than did individuals, but not more nonpresented words. In Experiment 2, collaborating groups versus individuals was a between-subjects variable, and everyone made two recall attempts. For recall, the pattern was the same as that in Experiment 1, in that collaborating groups recalled more presented words than did individuals but about the same number of nonpresented words. In a DRM paradigm, collaborating groups were able to produce more presented words than were individuals, without increasing their false recall.     

Age variations in the suicide rates and self-reported subjective well-being of married and never married persons

Previous research has established that people who never marry have higher suicide rates and lower self-reported subjective well-being than the married. The present study examines how the differences between: (1) never married persons who live alone, (2) never married cohabitees; and (3) currently married people, vary between age groups. The relevance of such age variations for status integration theory and theories of marital selection is discussed. Summing up results from previous studies of suicide rates, the relative position of the never married is found to be most unfavourable for people in their 30s and 40s; the differences are smaller among the young and the old. Data on self-reported well-being are taken from a large-scale survey of the population of one of Norway's 19 counties (n = 51 000), and are analysed by means of ordinary multiple regression. With regard to single people who were married or who never married, the results are largely consistent with the suicide findings; the advantage of marriage increases until about 40 years of age, then declines. The survey data also provide information about unmarried cohabitation, which seems to be more or less equivalent to marriage in most age groups. Neither status integration theory nor any other single theory of marriage effects or marital selection seems to be able to account for these findings in a satisfactory way.     

Prototypes are Key Heuristic Information in Insight Problem Solving

Evidence from a range of fields indicates that inventions are often inspired by drawing a parallel to solutions found in nature. However, the cognitive mechanism of this process is not well understood. The cognitive mechanism of heuristic prototype in scientific innovation was tested with 3 experiments. First, 84 historical accounts of important scientific innovations were collected and the prototype solution underlying them was extracted. Experiment 1 tested the validity of these materials and showed that knowledge of the prototype facilitated insight solutions. Experiment 2 and 3 suggested that activation of the prototype was indeed the critical element in the process of insight. Also, the mechanism of this activation was linked to the semantic similarity between the feature function of the prototype and the required function of the problem. In addition, Experiment 3 showed that participants who were better at excluding interference information more readily activated the relevant prototype. To sum up, the experiments suggested that activating a memory of the heuristic prototype was important in solving scientific innovation insight problems. Activating the feature function of right heuristic prototype and linking it by way of semantic similarity to the required function of the problem was the key mechanism people used to solve scientific insight problem.     

Decision-related action orientation predicts police officers' shooting performance under pressure

Background and Objectives: We aimed to test whether police officers’ trait self-control strength decreases negative effects of high pressure (HP) on state anxiety, shooting behavior, and shooting performance. Design and Methods: Forty-two officers performed a shooting test under both high and low-pressure (LP) conditions. Self-control strength was assessed with the decision-related action orientation (AOD) scale of the Action Control Scale (ACS-90). Effects of AOD on perceived anxiety, heart rate, shooting time, and shot accuracy were estimated and controlled for those of other individual difference measures (i.e. age, police working experience, trait anxiety, and threat-related action orientation). Results: After controlling for baseline values in the LP condition as well as the other individual difference measures, AOD significantly predicted shot accuracy in the HP condition. Conclusions: Results suggest that trait self-control strength in the form of AOD helps officers cope with anxiety and maintain perceptual-motor performance under HP.     

Validity of retrospective time‐use reports in old age

In a sample of N=83 participants aged between 72 and 97, we assessed the accuracy of time budgets originating from the Yesterday Interview (YI; Moss and Lawton, 1982) by means of comparison with in‐situ assessments based on the Experience‐Sampling Method (ESM; e.g. Csikszentmihalyi and Larson, 1987). We examined convergent and discriminant correlation patterns from indices of activity participation, location, company, and mood collected via both methods. The correspondence between the two methods appeared acceptable. Furthermore, we explored whether (a) length of the retention interval, (b) congruence with pre‐existing knowledge, and (c) congruence of the locations of encoding and retrieval accounted for (in)accuracy of recall. We also analysed the degree to which age and cognitive functioning explained performance differences. While we found discrepancies between YI and ESM to be hardly attributable to context effects or differences in cognitive functioning, there was an age effect. Finally, the sensitivity of the two methods to detect differences between groups was found to be largely equivalent but hardly sufficiently convergent. Copyright © 1999 John Wiley & Sons, Ltd.