R N HUGHES
Biographic Data
| ID | 5709540 |
|---|---|
| NAME | R N HUGHES |
| GIVEN NAMES | R N |
| FAMILY NAME | HUGHES |
| SIGNATURE | HUGHES R N |
| AFFILIATIONS | Queen's University Belfast |
| VERIFIED | No |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 8 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1964 |
| LATEST PUBLICATION YEAR | 1986 |
| H-INDEX | 0 |
Potentiation of Performance-Induced Anxiety by Caffeine in Coffee
46 student volunteers were confronted with a stressful or nonstressful task following ingestion of coffee that was either heavily caffeinated or relatively caffeine-free. State anxiety was increased by exposure to the stressful situation. However, this effect was greater in subjects who had ingested high caffeine-content coffee
Sex and Age Effects on Choice-Sequence Preferences of Preschool Children
Choice-sequence preferences of 20 preschool children were examined in relation to their sex and age. Females generally adopted fewer repeating sequences than males but this difference was largely dependent upon the age of the subjects and stimulus characteristics of the choice task. Older children appeared to show weaker preferences for repetition. The results were discussed in terms of age-related preference changes and females' developmental pr…
Effects of postweaning handling on locomotor and exploratory behavior in young rats
Social Facilitation of Locomotion and Exploration in Rats
Male white rats engaged in more locomotion and less defaecation and freezing in an open field when in the company of another male rat than when alone. They also exhibited proportionally more sniffling and less tooth grinding and chattering when in the same square of the aparatus as their partners than when in different squares. It was concluded that the presence of a second rat somehow reduced the aversive nature of the experimental environment
Effects of Food Deprivation, Deprivation Experience and Sex on Exploration in Rats
Following 0 or 48 hr current deprivation male and female rats were individually observed for 15 min in an exploration box consisting of a novel and a familiar half. Half of the subjects had gained deprivation experience by being allowed food for only 30 min a day for 10 consecutive days prior to testing. The remainder had been on an ad lib . diet for the same period. Current deprivation of 48 hr decreased locomotor activity (total number of units…
Effects of Intertrial Confinement and Brightness Change on Ferret Alternation Behavior
10 ferrets alternated more often in a Y-maze following 2-min. confinement to the chosen arm and following a brightness change in the arm not chosen on Trial 1. A brightness change in the same arm chosen on Trial 1 produced significant repetition. Similarities in behavior of rats and ferrets were interpreted as emphasising the general importance of novelty in exploration
Stimulus-Change Effects of Forcing in Alternation Behavior
To test the hypothesis that forcing left or right in a T-maze produces more alternation because of the stimulus-change resulting from subsequent removal of the arm barrier, rats were given free-choice trials and forced trials with a wooden barrier (favouring a high degree of change) and with a transparent barrier (favouring a lower degree of change). Although alternation was unaffected by the three conditions, the percentage of first investigator…
Responses by the Ferret to Stimulus Change
Ten ferrets were allowed to move about freely in a Y‐maze with an additional centre arm, for three periods of time. A change in brightness was then effected by removal of an anomalous arm insert and entrance archway to produce a maze of uniform brightness. On a subsequent critical trial the ferrets were observed to enter first the arm in which this change had been made. The results are discussed in terms of perceptual satiation, development of a …
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Responses by the Ferret to Stimulus Change
Ten ferrets were allowed to move about freely in a Y‐maze with an additional centre arm, for three periods of time. A change in brightness was then effected by removal of an anomalous arm insert and entrance archway to produce a maze of uniform brightness. On a subsequent critical trial the ferrets were observed to enter first the arm in which this change had been made. The results are discussed in terms of perceptual satiation, development of a …
Stimulus-Change Effects of Forcing in Alternation Behavior
To test the hypothesis that forcing left or right in a T-maze produces more alternation because of the stimulus-change resulting from subsequent removal of the arm barrier, rats were given free-choice trials and forced trials with a wooden barrier (favouring a high degree of change) and with a transparent barrier (favouring a lower degree of change). Although alternation was unaffected by the three conditions, the percentage of first investigator…
Effects of Intertrial Confinement and Brightness Change on Ferret Alternation Behavior
10 ferrets alternated more often in a Y-maze following 2-min. confinement to the chosen arm and following a brightness change in the arm not chosen on Trial 1. A brightness change in the same arm chosen on Trial 1 produced significant repetition. Similarities in behavior of rats and ferrets were interpreted as emphasising the general importance of novelty in exploration
Effects of Food Deprivation, Deprivation Experience and Sex on Exploration in Rats
Following 0 or 48 hr current deprivation male and female rats were individually observed for 15 min in an exploration box consisting of a novel and a familiar half. Half of the subjects had gained deprivation experience by being allowed food for only 30 min a day for 10 consecutive days prior to testing. The remainder had been on an ad lib . diet for the same period. Current deprivation of 48 hr decreased locomotor activity (total number of units…
Social Facilitation of Locomotion and Exploration in Rats
Male white rats engaged in more locomotion and less defaecation and freezing in an open field when in the company of another male rat than when alone. They also exhibited proportionally more sniffling and less tooth grinding and chattering when in the same square of the aparatus as their partners than when in different squares. It was concluded that the presence of a second rat somehow reduced the aversive nature of the experimental environment
Effects of postweaning handling on locomotor and exploratory behavior in young rats
Sex and Age Effects on Choice-Sequence Preferences of Preschool Children
Choice-sequence preferences of 20 preschool children were examined in relation to their sex and age. Females generally adopted fewer repeating sequences than males but this difference was largely dependent upon the age of the subjects and stimulus characteristics of the choice task. Older children appeared to show weaker preferences for repetition. The results were discussed in terms of age-related preference changes and females' developmental pr…
Potentiation of Performance-Induced Anxiety by Caffeine in Coffee
46 student volunteers were confronted with a stressful or nonstressful task following ingestion of coffee that was either heavily caffeinated or relatively caffeine-free. State anxiety was increased by exposure to the stressful situation. However, this effect was greater in subjects who had ingested high caffeine-content coffee
Psychology (8 works) · Developmental psychology (6 works) · Medicine (5 works) · Neuroscience (5 works) · Audiology (4 works) · Cognitive psychology (3 works) · Alternation (linguistics (2 works) · Brightness (2 works) · Endocrinology (2 works) · Endocrinology (2 works)