Mcgiboney, G. W., & Huey, W. C. (1982). Hand Test Norms For Disruptive Black Adolescent Males. Perceptual And Motor Skills, 54(2), 441-442.

The Hand Test (Wagner, 1962), 10 cards which portray hands in different positions, was administered individually to each of 51 black adolescent males of low socio-economic status. They had been referred for chronic disruptiveness in the classroom. Interscorer reliability was .88. The Acting-out Ratio exceeded high school norms. The Interpersonal-Environmental Response Ratio was significantly imbalanced toward the Interpersonal. Possible use of this ratio as a predictor of overt behavior should be studied.

Full article can be found here:

http://psycnet.apa.org/record/1982-29429-001