We are told that marihuana is harmless,except…

Some recent research suggests that marihuana, used in limited doses, may be no more harmful to users than some of the more commonly consumed alcoholic malt beverages, used in limited doses. But a careful examination of the medical research literature reveals specifics—often only hinted at in many of the recent articles on marihuana use—concerning excessive damage to individuals who may have certain physical or psychological inabilities to handle this substance, who may use it in doses that are more than minimal, or who may use it over extended periods of time.     

Putting Thoughts to Work: Concepts,Systematicity, and Stimulus‐Independence*

I argue that we can reconcile two seemingly incompatible traditions for thinking about concepts. On the one hand, many cognitive scientists assume that the systematic redeployment of representational abilities suffices for having concepts. On the other hand, a long philosophical tradition maintains that language is necessary for genuinely conceptual thought. I argue that on a theoretically useful and empirically plausible concept of ‘concept’, it is necessary and sufficient for conceptual thought that a thinker be able to entertain many of the potential thoughts produced by recombining her representational abilities apart from a direct confrontation with the states of affairs being represented. Such representational abilities support a cognitive engagement with the world that is flexible, abstract, and active.     

DETECTING JOB DIFFERENCES: A MONTE CARLO STUDY1

A monte carlo computer study was conducted where the statistical power of the univariate repeated measures ANOVA design proposed by Arvey and Mossholder (1977) to detect job differences was investigated. Also investigated was the relative value and usefulness of omega-squared estimates to indicate job similarities and differences. Job profile means and covariance structures were generated by using data from six relatively similar jobs and six dissimilar jobs based on Position Analysis Questionnaire (PAQ) data bank information. Different combinations of job differences (4 conditions), number of job raters (2 conditions), and violations of statistical assumptions (3 conditions) were generated (1000 sets for each of the 24 combinations) and each data set analyzed using the ANOVA design. Results indicate that testing for statistical significance is not as useful in determining job differences as examining the omega-squared estimates. Specifically, the omega-squared estimates for the interaction of the Jobs × Dimension effect is a relatively sensitive and stable indicator of job differences regardless of the number of raters and violations of the statistical assumptions.     

Structural Family Therapy: An Outsider's Perspective

This subjective viewpoint outlines a plan of attack for those who, like the present writer, would like to pirate some of the useful models and orientation developed at the Philadelphia Child Guidance Clinic. Specifically focused publications abound from the talented people at the Philadelphia Clinic, but, to date, no unifying work has appeared in the literature to define just what is meant when they use the rubric "structural family therapy." The present article defines one person's understanding of the components included under that rubric. As a definition and overview, no effort is made to be comprehensive, and few illustrations show how specific strategies would be implemented. Rather, this is an effort to draw from the literature, discussions, talks, and videotapes originating at the Philadelphia Child Guidance Clinic, a central kernel that could be adapted by other agencies desiring to utilize this orientation.