In a study of simulated juror decision making, Braden-Maguire, Sigal, and Perrino (2005) investigated the type of verdict given by study participants after they read a 12-page summary of a case involving a battered woman who had shot and killed her husband. Of the 80 participants, 27 assigned gave the verdict of guilty, 49 gave the verdict of not guilty by reason of self-defense, and 4 gave the verdict of not guilty by reason of insanity. Perform the hypothesis testing using a chi-square test for goodness of fit to determine whether the distribution of verdicts differs from what would be expected by chance. What is the effect size (to 2 decimal place)?