抄録
The present experiment examined overall and local effects of omission of reinforcers in a choice situation. Pigeons' key-pecking responses were reinforced under concurrent fixed-interval and random-interval schedules of food presentation. After some weeks of baseline sessions in which the probability of reinforcement was 1.00, approximately 25% of food presentations from the fixed-interval schedule were omitted and replaced by timeout periods. In such omission sessions, the overall relative rates of responding to the fixed-interval schedule became lower than those in the baseline sessions. On the other hand, when relative rates of responding to the fixed-interval schedule in the omission sessions were calculated separately for fixed-interval cycles preceded by timeout periods and those preceded by food presentations, the relative rates in the former type of fixed-interval cycles were higher than those in the latter type for three out of four pigeons. These results mean that relative rates of responding cannot always be regarded as reflecting a relative value of an alternative, and that the overall effect of the omission of fixed-interval reinforcers is not reducible to the local effect of omission.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 334-341 |
| ページ数 | 8 |
| ジャーナル | Behavioural Processes |
| 巻 | 74 |
| 発行部数 | 3 |
| DOI | |
| 出版物ステータス | Published - 2007 3 |
Fingerprint
ASJC Scopus subject areas
- Animal Science and Zoology
- Ecology, Evolution, Behavior and Systematics
- Behavioral Neuroscience
これを引用
Reinforcement omission in concurrent fixed-interval and random-interval schedules. / Ishii, Taku; Sakagami, Takayuki.
：: Behavioural Processes, 巻 74, 番号 3, 03.2007, p. 334-341.研究成果: Article
}
TY - JOUR
T1 - Reinforcement omission in concurrent fixed-interval and random-interval schedules
AU - Ishii, Taku
AU - Sakagami, Takayuki
PY - 2007/3
Y1 - 2007/3
N2 - The present experiment examined overall and local effects of omission of reinforcers in a choice situation. Pigeons' key-pecking responses were reinforced under concurrent fixed-interval and random-interval schedules of food presentation. After some weeks of baseline sessions in which the probability of reinforcement was 1.00, approximately 25% of food presentations from the fixed-interval schedule were omitted and replaced by timeout periods. In such omission sessions, the overall relative rates of responding to the fixed-interval schedule became lower than those in the baseline sessions. On the other hand, when relative rates of responding to the fixed-interval schedule in the omission sessions were calculated separately for fixed-interval cycles preceded by timeout periods and those preceded by food presentations, the relative rates in the former type of fixed-interval cycles were higher than those in the latter type for three out of four pigeons. These results mean that relative rates of responding cannot always be regarded as reflecting a relative value of an alternative, and that the overall effect of the omission of fixed-interval reinforcers is not reducible to the local effect of omission.
AB - The present experiment examined overall and local effects of omission of reinforcers in a choice situation. Pigeons' key-pecking responses were reinforced under concurrent fixed-interval and random-interval schedules of food presentation. After some weeks of baseline sessions in which the probability of reinforcement was 1.00, approximately 25% of food presentations from the fixed-interval schedule were omitted and replaced by timeout periods. In such omission sessions, the overall relative rates of responding to the fixed-interval schedule became lower than those in the baseline sessions. On the other hand, when relative rates of responding to the fixed-interval schedule in the omission sessions were calculated separately for fixed-interval cycles preceded by timeout periods and those preceded by food presentations, the relative rates in the former type of fixed-interval cycles were higher than those in the latter type for three out of four pigeons. These results mean that relative rates of responding cannot always be regarded as reflecting a relative value of an alternative, and that the overall effect of the omission of fixed-interval reinforcers is not reducible to the local effect of omission.
KW - Choice behaviour
KW - Key peck
KW - Pigeon
KW - Reinforcement schedule
UR - http://www.scopus.com/inward/record.url?scp=33847159649&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847159649&partnerID=8YFLogxK
U2 - 10.1016/j.beproc.2006.12.004
DO - 10.1016/j.beproc.2006.12.004
M3 - Article
C2 - 17275211
AN - SCOPUS:33847159649
VL - 74
SP - 334
EP - 341
JO - Behavioural Processes
JF - Behavioural Processes
SN - 0376-6357
IS - 3
ER -