The truly random control procedure: Conditioning to the static cues.

1974 ◽  
Vol 86 (4) ◽  
pp. 700-707 ◽  
Author(s):  
Edwin F. Kremer
Keyword(s):  
Control Procedure ◽  
Random Control

Pigeons’ Withdrawal from an Appetitive Conditioned Inhibitor under two Training Procedures

1981 ◽  
Vol 33 (2b) ◽  
pp. 77-94 ◽  
Author(s):  
E. A. Gaffan ◽  
M. M. Hart
Keyword(s):  
Conditioned Inhibition ◽  
Food Reinforcement ◽  
Food Presentation ◽  
Summation Test ◽  
Control Procedure ◽  
Excitatory Conditioning ◽  
Conditioned Inhibitor ◽  
Presentation Frequency ◽  
Negative Contingency ◽  
Random Control

The approach-withdrawal behaviour of pigeons to a red keylight was measured under three conditions; a negative contingency (NC) between keylight and food reinforcement, a CI or conditioned inhibition procedure where the keylight was non-reinforced in compound with a tone which was reinforced when presented alone, and a random control procedure (RC). The keylight-food contingencies in CI and NC were identical, and keylight and food presentation frequency were the same in all conditions. Subsequently the effect of adding the red keylight to a novel CS+ during or after excitatory conditioning was examined (summation test of inhibition). The inhibitory procedures, CI and NC, generally yielded similar functions for the acquisition of withdrawal, and the results of the withdrawal and summation measures were positively correlated. The implications of the results for theories of the acquisition and behavioural action of conditioned inhibitors are discussed.

Analyzing the random control procedure: Effects of paired and unpaired CSs and USs on autoshaping the chick's key peck with heat reinforcement

1977 ◽  
Vol 8 (4) ◽  
pp. 467-487 ◽  
Author(s):  
Edward A. Wasserman ◽  
James D. Deich ◽  
Norman B. Hunter ◽  
Linda S. Nagamatsu
Keyword(s):  
Control Procedure ◽  
Key Peck ◽  
Random Control

scholarly journals SELECTION FOR BLOOD PRESSURE LEVELS IN MICE

Genetics ◽  
1974 ◽  
Vol 76 (3) ◽  
pp. 537-549
Author(s):  
Gunther Schlager
Keyword(s):  
Blood Pressure ◽  
Systolic Blood Pressure ◽  
Genetic Variance ◽  
Additive Genetic Variance ◽  
Population Bottleneck ◽  
Control Line ◽  
Selected Lines ◽  
High Line ◽  
Selection For ◽  
Random Control

ABSTRACT Response to two-way selection for systolic blood pressure was immediate and continuous for about eight generations. In the twelfth generation, the High males differed from the Low males by 38 mmHG; the females differed by 39 mmHg. There was little overlap between the two lines and they were statistically significant from each other and from the Random control line. There appeared to be no more additive genetic variance in the eleventh and twelfth generations. Causes for the cessation of response are explored. This is probably due to a combination of natural selection acting to reduce litter sizes in the Low line, a higher incidence of sudden deaths in the High line, and loss of favorable alleles as both selection lines went through a population bottleneck in the ninth generation.—In the eleventh generation, the selected lines were used to produce F1, F2, and backcross generations. A genetic analysis yielded significant additive and dominance components in the inheritance of systolic blood pressure.

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