Defining heroes through deductive and inductive investigations.

Individuals in different contexts are referred to as "heroes" for seemingly different reasons. To better understand how and why people use this term, three studies were conducted. Approaching the question deductively, individuals defined the term "hero" and responses were coded according to existing definitions. Then, a definition of hero was sought inductively by examining the specific reasons participants cited in choosing their heroes. A third study further examined individuals' descriptions of their heroes in light of their own self views. The findings across these studies extend our understanding of the term hero and suggest that the use of the term is based both on the specific features of any heroic figure, as well as on the self views of the person identifying the hero.

Power in randomized group comparisons: the value of adding a single intermediate time point to a traditional pretest-posttest design.

Adding a pretest as a covariate to a randomized posttest-only design increases statistical power, as does the addition of intermediate time points to a randomized pretest-posttest design. Although typically 5 waves of data are required in this instance to produce meaningful gains in power, a 3-wave intensive design allows the evaluation of the straight-line growth model and may reduce the effect of missing data. The authors identify the statistically most powerful method of data analysis in the 3-wave intensive design. If straight-line growth is assumed, the pretest-posttest slope must assume fairly extreme values for the intermediate time point to increase power beyond the standard analysis of covariance on the posttest with the pretest as covariate, ignoring the intermediate time point.