Phase 2: Approach and avoidance conditioning, part 1.
If participants failed to make 19 correct responses out of 20, they were reexposed to the avoidance conditioning block.
Phase 7: Approach and avoidance conditioning, Part 2.
In the first experiment, goldfish were trained in non-trace avoidance conditioning; in the second experiment, fish were trained in trace avoidance conditioning in which temporal cues were crucial for the learning process.
In mammals, it has been found that intraamygdaloid infusions of NMDA antagonists, such as aminophosphonopentanoic acid (AP5) and dizocilpine maleate (MK-801), prevent the acquisition of Pavlovian fear conditioning and avoidance conditioning.
Selection for high rates and low rates of of avoidance conditioning
in the rat.
Algunas de las publicaciones que acompanaron este periodo inicial de su carrera academica son: A note on functional relations obtained from group data (publicado en Psychological Bulletin en 1952), Avoidance conditioning
with brief shock and non exteroceptive warning signal (publicado en Science en 1953) y Two temporal parameters of the maintenance of avoidance behavior by the white rat (publicado en Comparative and Physiological Psychology tambien en 1953).
Each animal was allowed to become accustomed to the shuttle-box apparatus for 5 min before every session; the animal was then subjected to 25 daily trials/session of avoidance conditioning
in four consecutive sessions (acquisition test).
Subjects were then exposed to an avoidance conditioning procedure in which one member from each relation was established as a discriminative stimulus for avoidance and nonavoidance, respectively.
Finally, aversive and aesthetically pleasing pictures used for avoidance conditioning were taken from the International Affective Picture System (IAPS: Lang, Bradley, & Cuthbert, 2001).
Next, an avoidance conditioning procedure was used to establish one member of the relational network (B1) as a discriminative stimulus ([S.
That is, because of the instruction to cancel certain upcoming pictures and sounds, participants may, at the outset of avoidance conditioning, simply have viewed all stimulus presentations (i.