AN INEXPENSIVE RANDOM‐ACCESS PROJECTOR FOR RAPID PRESENTATION OF PICTORIAL IMAGES<sup>1</sup>

Cohen, Perrin S.; Yoburn, Byron C.; Looney, Thomas A.

doi:10.1901/jeab.1976.26-131

Cited by 10 publications

(5 citation statements)

References 7 publications

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“…The present data show that the typical postreinforcement pattern of attack that has been reported on FT food schedules (Cohen, Yoburn, and Looney, 1976;Flory, 1969;Killeen, 1975;Looney et al, 1976) was not present during the first session but developed over the course of the experiment. Staddon (1977) suggested that the typical postreinforcement pattern of schedule-induced behavior is related to the reduced reinforcement rate following food delivery.…”

Section: Resultssupporting

confidence: 67%

“…EXPERIMENT I This experiment examined attack and drinking in White King pigeons exposed to an intermittent food schedule that previously was shown to induce attack (Flory, 1969;Looney, Cohen, and Yoburn, 1976). Looney et al (1976) showed that for one conspecific target, more pigeons engaged in schedule-induced attack when exposed to a food schedule before the target is introduced than when exposed to both the food schedule and the target on the first session.…”

mentioning

confidence: 99%

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ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES¹

Yoburn¹,

Cohen²

1979

J Exper Analysis Behavior

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Four White King pigeons in Experiment I were exposed to a fixed-time 90-second food schedule with successive access to water and a conspecific target. Drinking per session was sporadic and minimal, while attack per session occurred during most interfood intervals for all animals. Analysis of the temporal distribution of attack showed that the typical postreinforcement pattern of attack developed over the course of the experiment. In Experiment II, the same animals were exposed to a series of fixed-time schedules ranging from 30 to 360 seconds with successive access to water and target. Time engaged in drinking and the number of interfood intervals with drinking were less than that of attack. Food and no-food baselines, which have been typically used to assess schedules-induced drinking and attack, respectively, were used to evaluate the effect of the schedule on attack and water ingestion. Relative to the no-food baseline, both attack and drinking were enhanced by the schedule in all birds. Relative to the food baseline, drinking was slightly suppressed in three birds and attack was enhanced in all. For all animals, the food baseline resulted in more attack and drinking than the no-food baseline.

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Section: Resultssupporting

confidence: 67%

mentioning

confidence: 99%

ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES¹

Yoburn¹,

Cohen²

1979

J Exper Analysis Behavior

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“…The target image was provided by a rear-view projection unit described in detail by Cohen, Yoburn, and Looney (1976) . The colored image of a conspecific was very similar in appearance to Pictorial Target C employed by Looney et al (1976).…”

Section: Apparatusmentioning

confidence: 99%

Schedule-induced attack as a function of length of exposure to a fixed-time 90-sec schedule

Looney

Dove

1978

Bull. Psychon. Soc.

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“…Each screen was suspended by two frame-mounted microswitches (Micro Switch #311SM701T) located behind an 11.5 by 15.3 cm opening in the black rear wall. During sessions in which a target was presented, the left screen, as viewed from inside the chamber, remained dark and a randomaccess projector (Cohen, Yoburn, and Looney, 1976) displayed a colored image of a conspecific (Photo C, Figure 1) on the right screen. Under those conditions, the houselights were turned off, leaving the right screen as the only source of illumination (approximately 1 ft-L) in the chamber.…”

Section: Apparatusmentioning

confidence: 99%

“…Alternative targets have been utilized to study schedule-induced attack. These include a mirror (Cohen and Looney, 1973;Dove, 1976; Moore, Tychsen, and Thompson, in press), a colored photograph or silhouette of a White Carneaux pigeon , and a rear-projected image of a pigeon (Cohen, Yoburn, and Looney, 1976;Flory and Ellis, 1973;Rashotte, Katz, Griffin, and Wright, 1975). Two-dimensional pictorial targets eliminate most of the problems associated with the use of live and stuffed targets, but have the major disadvantage that many experimentally naive pigeons fail to attack them.…”

mentioning

confidence: 99%

VARIABLES AFFECTING ESTABLISHMENT OF SCHEDULE‐INDUCED ATTACK ON PICTORIAL TARGETS IN WHITE KING PIGEONS¹

Looney

Cohen

Yoburn

1976

J Exper Analysis Behavior

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White King pigeons exposed to food schedules before introduction of a colored photograph of a pigeon showed sustained schedule-induced attack on that image; additional birds given an early introduction to both the photograph and the schedule subsequently attacked the image at lower rates. Other pigeons attacked a second photograph of a pigeon regardless of whether it was introduced early or late. The late-introduction procedure was also effective in establishing attack on a projected image of a conspecific. The combined results showed that 14 of 17 White King pigeons given a late introduction to a pictorial target exhibited sustained attack against it and that a pigeon's initial reaction to a photograph of a conspecific when introduced early was a good predictor of subsequent schedule-induced attack on it.

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AN INEXPENSIVE RANDOM‐ACCESS PROJECTOR FOR RAPID PRESENTATION OF PICTORIAL IMAGES¹

Cited by 10 publications

References 7 publications

ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES¹

ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES¹

Schedule-induced attack as a function of length of exposure to a fixed-time 90-sec schedule

VARIABLES AFFECTING ESTABLISHMENT OF SCHEDULE‐INDUCED ATTACK ON PICTORIAL TARGETS IN WHITE KING PIGEONS¹

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AN INEXPENSIVE RANDOM‐ACCESS PROJECTOR FOR RAPID PRESENTATION OF PICTORIAL IMAGES1

Cited by 10 publications

References 7 publications

ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES1

ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES1

Schedule-induced attack as a function of length of exposure to a fixed-time 90-sec schedule

VARIABLES AFFECTING ESTABLISHMENT OF SCHEDULE‐INDUCED ATTACK ON PICTORIAL TARGETS IN WHITE KING PIGEONS1

Contact Info

Product

Resources

About

AN INEXPENSIVE RANDOM‐ACCESS PROJECTOR FOR RAPID PRESENTATION OF PICTORIAL IMAGES¹

ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES¹

ASSESSMENT OF ATTACK AND DRINKING IN WHITE KING PIGEONS ON RESPONSE‐INDEPENDENT FOOD SCHEDULES¹

VARIABLES AFFECTING ESTABLISHMENT OF SCHEDULE‐INDUCED ATTACK ON PICTORIAL TARGETS IN WHITE KING PIGEONS¹