On the relation between justification of solution method and correctness of solution in statistical problem solving

The relation between the justification of a choice of solution method and the correctness of that choice in statistical problem solving was investigated. In the first of two studies 16 subjects were asked to think aloud while solving two statistical problems. The results showed that an incorrect choice of solution method was more common when subjects did not justify their choice of solution as compared to when they justified their choice with domain-specific knowledge. Study 2 employed an experimental design. A group of 20 subjects were instructed to provide a justification for each choice of solution method, while another group of 20 subjects received no such instructions. The results showed no difference between the groups with respect to number of correct choices of solution method. A qualitative analysis of the justifications in the instructed group showed that the justifications for incorrect solution methods were more often incorrect than subjects' justifications for correct solution methods. The results in Study 2 suggested that the association found between incorrect choice of solution method and lack of justification in Study 1 was not in the first place due to a strategical deficiency on the part of the subjects but due to a lack of domain-specific knowledge.     

MANAGER COMMUNICATIVE STYLE AND NURSE MORALE

This research project examined questions concerning the effectiveness of female managers using stereotypically masculine or feminine communication management styles. Nurses from three hospitals were surveyed on the perceptions of the communication management style of their superiors and answered self-report questions about their morale and job satisfaction. Employees of female managers who were perceived as managing in a stereotypically feminine style reported significantly greater morale and job satisfaction than did employees whose female managers were perceived as managing in a stereotypically masculine style. Implications are discussed.     

COGNITIVE ENCODING PROCESSES: EVIDENCE FOR A GRAPHEMICALLY BASED SHORT-TERM MEMORY

Three competing models of word recognition processes currently receive psycholinguistic research support: direct encoding (i.e., word recognition proceeds from graphemes); indirect encoding (i.e., word recognition proceeds from a phonemic translation of graphemes); and dual access (i.e., word recognition can proceed from either graphemes or phonemes). Resolution of the conflict between these models has been hampered by methodological problems common to research techniques in this area. The two experiments reported in this study analyzes the competing models via the SLIP technique, which avoids those methodological problems. Support is yielded for the direct encoding model. Implications are discussed.