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Haviland, Amelia; Nagin, Daniel S.; Rosenbaum, Paul R. – Psychological Methods, 2007
In a nonrandomized or observational study, propensity scores may be used to balance observed covariates and trajectory groups may be used to control baseline or pretreatment measures of outcome. The trajectory groups also aid in characterizing classes of subjects for whom no good matches are available and to define substantively interesting groups…
Descriptors: Males, Observation, Control Groups, Matched Groups
Putnam, Linda L.; Skerchock, Linda – 1978
Verbal and nonverbal patterns of dominance in dyads formed from a group of 72 college students determined to be sex-type males, sex-type females, or androgynous individuals were investigated in the study described in this paper. The paper first notes problems in recent research on sex differences in communication, presents the research questions…
Descriptors: Androgyny, Behavior Patterns, College Students, Communication Research