Weitzner, Martin2018-05-312018-05-3119631963b14694074https://hdl.handle.net/2144/29219Thesis (Ph.D.)--Boston UniversityThe present study focused specifically on the following experimental issues: 1) The nature of the relationship between M.A.S. score and performance on a variety of simple and complex tasks performed by the same subjects. 2) The extent to which amphetamine alone affects performance of these same tasks. 3) The nature of inter-relationships between the following variables: a) type of learning material, b) drug, c) M.A.S. score. 4) The nature of the combined effects of two drives on the performance of the various tasks.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.Modified Ashworth ScaleAmphetaminesThesis/Dissertation