Authors: HOPKINS WD LEAVENS DA

Citation: Wd. Hopkins et Da. Leavens, HAND USE AND GESTURAL COMMUNICATION IN CHIMPANZEES (PAN-TROGLODYTES), Journal of comparative psychology, 112(1), 1998, pp. 95-99

Authors: LEAVENS DA

Citation: Da. Leavens, HAVING A CONCEPT SEE DOES NOT IMPLY ATTRIBUTION OF KNOWLEDGE - SOME GENERAL-CONSIDERATIONS IN MEASURING THEORIES OF MIND, Behavioral and brain sciences, 21(1), 1998, pp. 123

Authors: LEAVENS DA HOPKINS WD

Citation: Da. Leavens et Wd. Hopkins, INTENTIONAL COMMUNICATION BY CHIMPANZEES - A CROSS-SECTIONAL STUDY OFTHE USE OF REFERENTIAL GESTURES, Developmental psychology, 34(5), 1998, pp. 813-822

Authors: HYATT CW LEAVENS DA

Citation: Cw. Hyatt et Da. Leavens, AN INEXPENSIVE REINFORCEMENT DISPENSER, Behavior research methods, instruments, & computers, 29(3), 1997, pp. 446-447

Authors: HYATT CW LEAVENS DA

Citation: Cw. Hyatt et Da. Leavens, AN INEXPENSIVE LIQUID DISPENSER, Behavior research methods, instruments, & computers, 29(3), 1997, pp. 448-449

Authors: LEAVENS DA HOPKINS WD BARD KA

Citation: Da. Leavens et al., INDEXICAL AND REFERENTIAL POINTING IN CHIMPANZEES (PAN-TROGLODYTES), Journal of comparative psychology, 110(4), 1996, pp. 346-353