Successive Negative Contrast Effects for Activity-Conditioned Goldfish (Carassiusauratus) as a Function of Housing Conditions

1979 ◽  
Vol 29 (2) ◽  
pp. 245-254 ◽  
Author(s):  
Stephan E. Breuning ◽  
Allen H. Wolach
Keyword(s):  
Negative Contrast ◽  
Housing Conditions ◽  
Contrast Effects ◽  
Successive Negative Contrast

scholarly journals Effects of early life and current housing on sensitivity to reward loss in a successive negative contrast test in pigs

2019 ◽  
Vol 23 (1) ◽  
pp. 121-130 ◽  
Author(s):  
L. Luo ◽  
I. Reimert ◽  
E. A. M. Graat ◽  
S. Smeets ◽  
B. Kemp ◽  
...  
Keyword(s):  
Early Life ◽  
Large Reward ◽  
Small Reward ◽  
Affective State ◽  
Negative Contrast ◽  
Lower Probability ◽  
Housing Conditions ◽  
Long Term Effects ◽  
Sensitivity To Reward ◽  
Successive Negative Contrast

Abstract Animals in a negative affective state seem to be more sensitive to reward loss, i.e. an unexpected decrease in reward size. The aim of this study was to investigate whether early-life and current enriched vs. barren housing conditions affect the sensitivity to reward loss in pigs using a successive negative contrast test. Pigs (n = 64 from 32 pens) were housed in barren or enriched conditions from birth onwards, and at 7 weeks of age experienced either a switch in housing conditions (from barren to enriched or vice versa) or not. Allotting pigs to the different treatments was balanced for coping style (proactive vs. reactive). One pig per pen was trained to run for a large reward and one for a small reward. Reward loss was introduced for pigs receiving the large reward after 11 days (reward downshift), i.e. from then onwards, they received the small reward. Pigs housed in barren conditions throughout life generally had a lower probability and higher latency to get the reward than other pigs. Proactive pigs ran overall slower than reactive pigs. After the reward downshift, all pigs ran slower. Nevertheless, reward downshift increased the latency and reduced the probability to get to the reward, but only in pigs exposed to barren conditions in early life, which thus were more sensitive to reward loss than pigs from enriched early life housing. In conclusion, barren housed pigs seemed overall less motivated for the reward, and early life housing conditions had long-term effects on the sensitivity to reward loss.

Evaluation of an operant successive negative contrast task as a method to study affective state in rodents

2012 ◽  
Vol 234 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Emma N. Mitchell ◽  
Hugh M. Marston ◽  
David J. Nutt ◽  
Emma S.J. Robinson
Keyword(s):  
Affective State ◽  
Negative Contrast ◽  
Successive Negative Contrast

scholarly journals Consummatory Successive Negative Contrast in Rats

BIO-PROTOCOL ◽  
2019 ◽  
Vol 9 (7) ◽  
Author(s):  
Ana Jiménez-García ◽  
Leandro Ruiz-Leyva ◽  
Ana Vázquez-Ágredos ◽  
Carmen Torres ◽  
Mauricio Papini ◽  
...  
Keyword(s):  
Negative Contrast ◽  
Successive Negative Contrast

scholarly journals Assessing the External Validity of Successive Negative Contrast – Implications for Animal Welfare

2019 ◽  
Vol 23 (1) ◽  
pp. 54-61 ◽  
Author(s):  
Sarah L. H. Ellis ◽  
Stefanie Riemer ◽  
Hannah Thompson ◽  
Oliver H. P. Burman
Keyword(s):  
Animal Welfare ◽  
External Validity ◽  
Negative Contrast ◽  
Successive Negative Contrast

Dimensions of sucrose solutions in the successive negative contrast effect

2020 ◽  
Vol 69 ◽  
pp. 101615
Author(s):  
Juan Carlos Ruiz-Salas ◽  
L. Gonzalo de la Casa ◽  
Mauricio R. Papini
Keyword(s):  
Contrast Effect ◽  
Negative Contrast Effect ◽  
Negative Contrast ◽  
Successive Negative Contrast ◽  
Sucrose Solutions
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