PowerStaTim 1.0 – un nou program statistic de calcul a m rimii efectului i a puterii statistice

The present paper presents the main characteristics of a new software for computing effect size and statistical power indicators: PowerStaTim 1.0 (Maricu oiu & Sava, 2007). The first part of the present paper presents the rationale for computing effect size and statistical power in psychological research. The second part of the article introduces the reader to the technical characteristics of PowerStaTim 1.0 and to the processing options of this software.