Apparatus as milestones in the history of comparative psychology.
Significant apparatus developments from the history of comparative psychology are reviewed, including the contemporary trend toward computer use in research with nonhuman animals.  It is argued that milestone apparatus served not only to open new lines of inquiry but also to shape or delimit the nature of the answers that were obtained.
Washburn
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DA
Georgia State University, Atlanta, USA.
Rumbaugh
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DM
Putney
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RT
D000818:Animals; D000830:Animals, Laboratory; D002415:Cats; D003201:Computers / Q000706:statistics & numerical data; D011323:Primates / Q000523:psychology*; D011581:Psychological Tests; D011587:Psychology, Comparative / Q000295:instrumentation* / Q000639:trends*; D051381:Rats; D012107:Research Design / Q000639:trends*