SEX EFFECTS IN CONVERSATIONAL INTERACTION: ANOTHER LOOK AT MALE DOMINANCE

The present study represents a contemporary test of traditional assumptions about sex effects in social interaction. An experiment was conducted to assess the independent and interactive effects of communicator sex, listener sex, and interpersonal distance on temporal measures of conversational interaction. Results demonstrated that the average duration of speech acts was significantly longer for females than for males; that communicators, regardless of sex, speak for a greater proportion of the total conversation when the listener is female as opposed to male; and that within the sex-same male dyads, far interpersonal distance is associated with significantly greater simultaneous speech when compared to the near condition. Results are interpreted as refutation for traditional notions of male dominance.     

CONNECTIONS BETWEEN LOWER BACK PAIN, INTERVENTIONS, AND ABSENCE FROM WORK: A TIME-BASED META-ANALYSIS

We conducted qualitative and quantitative reviews of the medical literature to develop an understanding of the linkages between nonspecific lower back pain (LBP) and employee absenteeism, and the efficacy of lower back pain interventions (LBPI) in reducing absenteeism. First, we offered a general time-based framework to clarify the causal flows between LBP and absence. Second, we inspected LBPIs designed to ameliorate LBP, which should, in turn, lead to reduced absence-taking. Third, we conducted a meta-analysis of 45 effect sizes involving 12,214 people, to examine the relationships between both LBP and LBPIs and absenteeism. Consistent with a presumption in the medical literature, we found support for the idea that chronic LBP has a positive overall relationship with absence-taking. The relationship was stronger for absence frequency measures than time lost measures. In addition, we found that increasing aggregation time (i.e., increases in the periods over which absence is observed) enhances the size of the chronic LBP-absence connection. Further, evidence showed that LBPIs were effective overall in reducing absenteeism. Finally, when there was a temporal mismatch between the form of LBP (acute vs. chronic) and the absenteeism aggregation period in LBPI studies, effect sizes were significantly smaller. We concluded with a discussion of these results, methodological limitations, and suggestions for future research that blends medical with organizational approaches to the etiology of absence.     

MASS COMMUNICATION AND BELIEF CHANGE: A TEST OF THREE MATHEMATICAL MODELS

Three mathematical models of communication and belief change were proposed and tested: a proportional change model, a belief certainty model, and an accumulated information model. A quick correlational check of the three models suggested that the accumulated information model was the superior with the belief certainty model being the most inferior of the three. Stronger support for the accumulated information model obtained using a more stringent test: a nonlinear bivariate regression which produced visual “plots” of empirical data that nearly duplicated the visual “plots” produced by the theoretical model. The accumulated information model states that belief change is proportional to the discrepancy between the original belief and the belief communicated in the message, and inversely proportional to the amount of information which the receiver has about the topic at the time the message is received. The belief certainty model was the most inferior of the three indicating that the degree to which a receiver is certain in conviction is unrelated to the communication-belief change relationship.