1661
We examined effects in 13 measures of cognitive ability including episodic memory , working memory , inhibitory control , convergent creativity , intelligence and scholastic achievement , with the goals of determining ( 1 ) whether the drug is at least moderately enhancing ( Cohen ' s d > = . 5 ) to some or all cognitive abilities tested , ( 2 ) whether its effects on cognition are moderated by baseline ability or COMT genotype , and ( 3 ) whether it induces an illusory perception of cognitive enhancement .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None