“…All studies were excluded if an effect size could not be calculated (Chhokar & Wallin, 1984;Dey & Kaur, 1965;Komaki, Bat-wick, & Scott, 1978;Komaki, Collins, & Penn, 1982;Reber & Wallin, 1984;Stedry & Kay, 1966;Weed & Mitchell, 1980). The following studies were excluded from the goal difficulty analysis because they contained an experimental artifact in the easy goal condition which involved instructing subjects to stop working when the easy goal was reached (Locke, 1967a;Locke, Frederick, Buckner, & Bobko, 1984;Locke, Mento, & Katcher, 1978). This instruction may serve to artifactually inflate the goal difflculty-performance relationship as noted by Bavelas and Lee (1978).…”