Reducing cognitive complexity in a hypothetico-deductive reasoning task

The confusion/non-consequential thinking explanation proposed by Newstead, Girotto, and Legrenzi (1995) for poor performance on Wason's THOG problem (a hypothetico-deductive reasoning task) was examined in three experiments with 300 participants. In general, as the cognitive complexity of the problem and the possibility of non-consequential thinking were reduced, correct performance increased. Significant but weak facilitation (33-40% correct) was found in Experiment 1 for THOG classification instructions that did not include the indeterminate response option. Substantial facilitation (up to 75% correct) was obtained in Experiment 2 with O'Brien et al.'s (1990) one-other-THOG classification instruction. In Experiment 3, a revised version of O'Brien et al.'s pre-test problem format also led to substantial facilitation, even with the use of the standard three-choice THOG classification instruction. These findings are discussed in terms of Newstead et al.'s theoretical proposal and possible attentional factors.     

From stimulus-driven to appraisal-driven attention: Towards differential effects of goal relevance and goal relatedness on attention?

The Component Process Model posits that attention is appraisal-driven rather than stimulus-driven and that the appraisal of relevance is of critical importance in such a mechanism. This means that any stimulus can attract attention or not depending on how relevant it is appraised. This hypothesis was tested in an implicit border similarity judgement task, in which thirsty participants were presented with bottles and vases that were respectively very relevant and weakly relevant to their goal to quench their thirst. These stimuli were also presented to quenched participants for whom none of the stimuli was relevant. The findings support the idea that our attention is more likely to be appraisal-driven than stimulus-driven, since bottles produced an attentional interference in thirsty participants only. It was also observed that, even if vases were judged weakly relevant by thirsty participants, they produced an attentional interference compared to empty stimuli, which was not the case in the quenched participants group. The concept of goal relatedness was proposed as an explanation for this result, and methodological implications were also discussed.     

The role of specificity in the lexical encoding of participants

In addition to information about phonology, morphology and syntax, lexical entries contain semantic information about participants (e.g., Agent). However, the traditional criteria for determining how much participant information is lexically encoded have proved unreliable. We have proposed two semantic criteria (obligatoriness and selectivity) that jointly identify the participants that are lexically encoded in verbs. We tested whether one of these criteria, semantic selectivity, makes psychologically real distinctions between participant information that is lexically encoded and participant information that is not. We examined how readers integrated syntactically optional WH-constituents in filler-gap sentences when the participant information conveyed by the WH-filler was specific to a restricted class of verbs (i.e., source locations) and when it was not (i.e., event locations). Our results provide support for the role of specificity in the lexical encoding of participant information of syntactically optional constituents.     

Mental rotation in schizophrenia

Motor imagery provides a direct insight into action representations. The aim of the present study was to investigate the level of impairment of action monitoring in schizophrenia by evaluating the performance of schizophrenic patients on mental rotation tasks. We raised the following questions: (1) Are schizophrenic patients impaired in motor imagery both at the explicit and at the implicit level? (2) Are body parts more difficult for them to mentally rotate than objects? (3) Is there any link between the performance and the hallucinating symptom profile? The schizophrenic patients (n = 13) displayed the same pattern of performance as the control subjects (n = 13). More particularly, schizophrenic patients’ reaction time varied as a function of the angular disparity of the stimuli. On the other hand, they were significantly slower and less accurate. Interestingly, patients suffering from hallucinations made significantly more errors than non-hallucinatory patients. We discussed these latter results in terms of deficit of the forward model. We emphasized the necessity to distinguish different levels of action, more or less impaired in schizophrenia.     

Mental health issues among clergy and other religious professionals: a review of research

The authors reviewed the literature on mental health issues among clergy and other religious professionals, using electronic searches of databases of medical (Medline), nursing (CINAHL), psychology (PsycINFO), religious (ATLA), and sociological research (Sociofile). The existing research indicates the Protestant clergy report higher levels of occupational stress than Catholic priests, brothers, or sisters. Catholic sisters repeatedly reported the lowest work-related stress, whereas women rabbis reported the highest stress levels in various studies. Occupational stress appears to be a source of family stress among Protestant clergy--a factor which clergy and their spouses believe the denominational leadership should address. High levels of stress also have been found to be associated with sexual misconduct among clergy. The authors make several recommendations based on these and other findings they report in their review.     

Class specificity and the lexical encoding of participant information

It is commonly assumed across the language sciences that some semantic participant information is lexically encoded and some is not. In this article, we propose that semantic obligatoriness and verb class specificity are criteria which influence whether semantic information is lexically encoded. We present a comprehensive survey of the English verbal lexicon and two continuation studies which confirm that both factors play a role in the lexical encoding of participant information.     

De-confusing the THOG problem: the Pythagorean solution.

Sources of facilitation for Needham and Amado's (1995) Pythagoras version of Wason's THOG problem were systematically examined in three experiments with 174 participants. Although both the narrative structure and figural notation used in the Pythagoras problem independently led to significant facilitation (40-50% correct), pairing hypothesis generation with either factor or pairing the two factors together was found to be necessary to obtain substantial facilitation (> 50% correct). Needham and Amado's original finding for the complete Pythagoras problem was also replicated. These results are discussed in terms of the "confusion theory" explanation for performance on the standard THOG problem. The possible role of labelling as a de-confusing factor in other versions of the THOG problem and the implications of the present findings for human reasoning are also considered.