The question arises whether the effects of collective bargaining in the public sector will resemble the consequences for private enterprise. Using assumptions drawn from private sector experience, this study investigated the impact of collective bargaining on the school principal from the perspectives of rules orientation, status anxiety, role…

Special cases of the factor analysis model are developed for four selection situations. Methods are suggested whereby parameters in each case can be estimated using a maximum likelihood procedure recently developed by Joreskog. (Author)

After developing the theory that writing is enhanced when the writer discusses his ideas before he submits them to paper, author outlines an experiment to test the theory. (Editor)

Based on the premise that properly selected photographs can help develop scientific thinking, the author presents two examples in which students would be involved in active observation and in the making and testing of hypotheses. (LC)

Study investigated whether the proportion of examinees who answer an item correctly may be influenced by the difficulty of the immediately preceding item. (Authors/MB)

Videotapes of two 17-month old children -- each child sometimes described as a boy and sometimes as a girl -- were shown to 85 adult middle-class subjects, who rated attributes of the children on questionnaires containing sex role items. (Authors/RY)

Forty-nine Ss learned a unidimensional concept with a six-dimensional stimulus set. Instructions specified the 12 possible unidimensional concepts, and the response on each trial was to give confidence ratings to each of the 12 corresponding hypotheses. (Author)

Certain assumptions regarding the mechanism of retroactive inhibitions (RI) and spontaneous recovery were examined. Results are considered supportive of an interpretation of RI and recovery based upon the dissipation of response set interference. (Authors)

Considers the study of similarities and differences in factor structures between different groups. (AG)

This paper describes two statistics (chi square and Kendall's S) which may be used to test hypotheses about the association between two variables when observations are cross-classified in a contingency table. (CK)