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    ABSTRACT: Presents complete normative data for responses to 56 verbal categories by students from the universities of Maryland (N = 270) and Illinois (N = 172). All 43 categories from the Connecticut norms are included, and complete data are presented for all responses given by each S to each category label within 30 sec. Additional data include (1) number of times each response was given 1st and mean rank of each response; (2) correlations between the various measures and between the Maryland and Illinois samples for each category; and (3) "category potency" measures and ratings for each category. (PsycINFO Database Record (c) 2012 APA, all rights reserved)
    Journal of Experimental Psychology 05/1969; 80(3p2). · 4.70 Impact Factor
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    ABSTRACT: We present a new corpus of 80 pictures of unreal objects, useful for a controlled assessment of object reality decision. The new pictures were assembled from parts of the Snodgrass and Vanderwart [J. Exp. Psychol., Hum. Learning Memory 6; 1980: 174] set and were devised for the purpose of contrasting natural categories (animals, fruits and vegetables), artefacts (tools, vehicles and furniture), body parts and musical instruments. We examined 140 normal subjects in a free-choice and a multiple-choice object decision task, assembled with 80 pictures of real objects and above 80 new pictures of unreal objects in order to obtain a difficulty index for each picture. We found that the tasks were more difficult with pictures representing natural entities than with pictures of artefacts. We found a gender by category interaction, with a female superiority with some natural categories (fruits and vegetables, but not animals), and a male advantage with artefacts. On this basis, the difficulty index we calculated for each picture is separately reported for males and females. We discuss the possible origin of the gender effect, which has been found with the same categories in other tasks and has a counterpart in the different familiarity of the stimuli for males and females. In particular, we contrast explanations based on socially determined gender differences with accounts based on evolutionary pressures. We further comment on the relationship between data from normal subjects and the domain-specific account of semantic category dissociations observed in brain-damaged patients.
    Neuropsychologia 02/2002; 40(10):1637-53. · 3.48 Impact Factor
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    ABSTRACT: We studied variables influencing category and letter fluency in a large population-based sample of elderly participants. Letter and category fluency tasks were administered to 1133 unselected non-demented elderly participants in the Paquid cohort on normal and pathological aging. Age, education, principal lifetime occupation and depressive symptomatology independently influenced both category and letter fluency, while gender influenced only category fluency. A conceptualization measure (similarities) was found to influence fluency results mostly through education and prior occupation.
    Aging Neuropsychology and Cognition 01/2001; 8(2):98-108. · 1.07 Impact Factor

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