“…These searches resulted in usable data from 86 studies with a total of 445 measures of the generation effect size on the basis of 17,711 subjects, some of which were derived from nonindependent samples within a single experiment. Primary studies were excluded for a number of reasons, including the use of memory tests other than free recall, cued recall, or recognition (e.g., J. C. Brown et al, 1993;Java, 1996); bilingual subjects (e.g., O'Neill, Roy, & Tremblay, 1993); subjects from clinical samples (e.g., Pring, 1988); or pictures as stimuli (e.g., Peynircio lu, 1989). In addition, only the data from initial tests were used in studies that reported the results of multiple-trial testing (e.g., McFarland, Warren, & Crockard, 1985).…”