M Coriell | PubMed Health

PubMed1995

Concordance in the face of a stressful event: when do members of a dyad agree that one person supported the other?

Students reported behaviors they expected from a primary support persons in response to an upcoming exam. After the exam, students and support persons independently reported behaviors the supporter provided. There was only moderate agreement within dyads about the occurrence of supportive behaviors (kappa = .39). Dyad intimacy, fulfilled expectancies, student and supporter social competence, and commal orientation all were associated with greater concordance. There was also greater agreement on behaviors rated by judges as helpful than harmful and in dyads that included a woman than in man-man dyads. Greater dyad intimacy and more fulfilled expectancies accounted for why there was greater concordance in dyads that included a women, and more fulfilled expectancies accounted for why there was greater concordance on positive than negative behaviors.

Adolescent↗

PubMed1994

Analysis of lymphocyte proliferation data: do different approaches yield the same results?

We addressed whether different approaches to the treatment of lymphocyte proliferation data influence the interpretation of results. We focused on two specific issues: (1) the impact of using optimal concentrations of mitogen versus a repeated measures approach using all concentrations and (2) the impact of correcting for unstimulated wells, and the method chosen for doing so. First, analysis of only the optimal concentration yields the same results as using a repeated measures approach. Second, uncorrected stimulated data, difference scores, and statistical control of unstimulated values all yield identical conclusions. The stimulation index, however, frequently yields different outcomes than the other approaches. We discuss reasons for these differences, note that the equivalence between repeated measures and optimal concentration techniques is limited to studies predicting suppression of proliferation irrespective of concentration, and suggest situations when the various approaches to analysis be used.

Adult↗