An automatic recording device for use in animal psychology.

Abstract

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The inheritance of maze learning ability in rats.

“…The immediate aim is to develop two lines-one of bright animals and the other of dull animals. 1 This paper is a presentation of the material to and including the F4 generation.…”

On the relation of thyroid disturbances to maze performance.

“…These were matched with 34 litter mates so chosen that each experimental animal weighed more than the control sibling. After 40 days training was begun, preparatory to running in a twelve unit, enclosed, multiple-T maze described by Heron (5). At this time the weight relation was completely reversed.…”

Anticipative transfer of mechanically guided turns.

“…PROCEDURE The elevated rectilinear maze of 12 units, the last four of which are shown in Fig. 1, is an adaptation of the Heron-Drake pattern (8) and is described in detail in (7). The doors which prevent retracing can be left unlocked to make the unit free, or one can be locked to make a culde-sac on that 6ide.…”