A multitrait–multimethod study of assessment instruments for complex problem solving

Recently published studies on Complex Problem Solving (CPS) suggest that assessments of CPS using multiple complex systems are only moderately related to tests of classical cognitive abilities. Further, CPS assessments show incremental validity beyond tests of other cognitive abilities when predicting relevant outcomes. However, these empirical accounts have relied on single CPS assessment instruments. We do not know whether these findings will generalize to the construct level across different CPS assessment instruments. To answer this question, we tested a sample of N = 339 German university students who completed three CPS assessment instruments based on multiple complex systems (MicroDYN, the Genetics Lab, and MicroFIN) and the matrices subtest of the Intelligence Structure Test as measure of reasoning. Students further reported their school grades. Analyses including latent multitrait–multimethod models provided support for the conceptualization of CPS as a complex cognitive ability. Results indicated that different CPS assessment instruments showed sufficient convergent validity (with a consistency mostly between .50 and .60). In addition, we found evidence for the divergent validity of CPS from reasoning (reasoning predicted two CPS facets, knowledge and control, β_KNOW = .49 and β_CON = .53, respectively). In the prediction of academic achievement, CPS explained variance in natural science grades after we controlled for reasoning (β_CPS = .22), whereas social science grades were not predicted. Our findings suggest that the validity of CPS generalizes across different measurement instruments.     

Rats' sensitivity to their direction of movement and spontaneous alternation behaviour

The response of rats to their prior direction of movement was examined in three spontaneous alternation experiments. In the first, a straight alley run interpolated between two T-maze trials increased goal arm alternation when it was in the same direction as that of the animal's first T-maze goal arm entry and decreased the alternation tendency when it was in the opposite direction. Experiment II found that multiple runs in one direction in a straight alley increased the likelihood that rats would subsequently enter the goal arm of a T-maze which permitted movement in an opposite direction. In the third experiment, rats entered those goal arms of an eight-arm radial maze which permitted movement in any direction which was different from that during a preceding straight alley trial. The results of these experiments indicate that rats are quite sensitive to their direction of movement and use it as a cue in guiding their behaviour in a variety of experimental situations.     

"Oh Those Crazy Cards Again": A History of the Debate on the Nazi Rorschachs, 1946–2001

This essay provides a critical history of the debate on the Rorschach Inkblot Tests administered to 22 leading figures of the Third Reich who were imprisoned in Nuremberg in 1945–1946. This debate occurred in two stages. The question at the heart of the first stage was whether the Nazi leaders were sane or psychopaths. Despite a strong disagreement concerning the use of these diagnostic labels, there was a surprisingly broad agreement on the actual substance of the discrepant diagnoses. Divisions of opinion, however, arose from political dissension in two areas: the nature of liberal democracies and authoritarian regimes, and the possibility of trust in any political leadership. The second stage was marked by an ideology of convergence aimed at establishing a consensual "scientific truth" on the Nazi Rorschachs. Thus, the politics of the second phase were motivated by interests and ambitions internal to the field of Rorschach expertise, rather than by extraneous political anxieties.