Joan Havlena
Biographic Data
| ID | 7114869 |
|---|---|
| NAME | Joan Havlena |
| GIVEN NAMES | Joan |
| FAMILY NAME | Havlena |
| SIGNATURE | HAVLENA J |
| AFFILIATIONS | Animal Behavior Laboratory, Lafayette Clinic and Wayne State University, Detroit, Michigan |
| VERIFIED | No |
| TOTAL WORKS | 4 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 4 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1962 |
| LATEST PUBLICATION YEAR | 1965 |
| H-INDEX | 0 |
Effects of Overlearning and Spatial Delay of Reinforcement upon a Discrimination Reversal
Rats were trained on a brightness discrimination task under two conditions of spatial delay of reinforcement. Groups received either 0 or 150 postcriterial trials and then were given reversal training. Reversal training was under either the same delay as experienced in original learning or the alternate one. The results indicated that the delay variable, ineffective in original learning, affected reversal acquisition. The postcriterial trials had…
Postnatal Effects of Control Fluids Administered to Gravid Rats
Studies of the effects of drugs and other compounds on animals typically employ injections of the diluting agent to a control group. Diluting agents commonly used are distilled water, saline, and oil. Routes of administration also vary and include the intraperitoneal, subcutaneous, intravenous, and oral. Since previous work in this laboratory has been concerned with the administration of various pharmacologicall agents to pregnant rats and the ef…
Adrenalectomy of the Pregnant Rat and Behavior of the Offspring
Albino rats were adrenalectomized on either Day 101⁄2 or Day 161⁄2 of gestation. The offspring were reared by foster mothers. At 25, 30, 35, 40, or 45 days of age they were evaluated on the open field and timidity box tests. There were no behavioral or adrenal size differences among the offspring of adrenalectomized and sham-operated or unoperated control mothers. Consistent and significant sex differences on all measures were found, with females…
Effects of Aging on Open Field Behavior
In a recent report by Furchtgott, et al. ( 1961 ), exploratory behavior in an open field situation was found to decrease with increasing age. These investigators used naive animals at each age of testing and terminated their study at 390 days of age. The present investigation confirms some of the findings of the above mentioned report, utilizing a different experimental design with repeated testing of the same animals to demonstrate chat the age …
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Effects of Aging on Open Field Behavior
In a recent report by Furchtgott, et al. ( 1961 ), exploratory behavior in an open field situation was found to decrease with increasing age. These investigators used naive animals at each age of testing and terminated their study at 390 days of age. The present investigation confirms some of the findings of the above mentioned report, utilizing a different experimental design with repeated testing of the same animals to demonstrate chat the age …
Postnatal Effects of Control Fluids Administered to Gravid Rats
Studies of the effects of drugs and other compounds on animals typically employ injections of the diluting agent to a control group. Diluting agents commonly used are distilled water, saline, and oil. Routes of administration also vary and include the intraperitoneal, subcutaneous, intravenous, and oral. Since previous work in this laboratory has been concerned with the administration of various pharmacologicall agents to pregnant rats and the ef…
Adrenalectomy of the Pregnant Rat and Behavior of the Offspring
Albino rats were adrenalectomized on either Day 101⁄2 or Day 161⁄2 of gestation. The offspring were reared by foster mothers. At 25, 30, 35, 40, or 45 days of age they were evaluated on the open field and timidity box tests. There were no behavioral or adrenal size differences among the offspring of adrenalectomized and sham-operated or unoperated control mothers. Consistent and significant sex differences on all measures were found, with females…
Effects of Overlearning and Spatial Delay of Reinforcement upon a Discrimination Reversal
Rats were trained on a brightness discrimination task under two conditions of spatial delay of reinforcement. Groups received either 0 or 150 postcriterial trials and then were given reversal training. Reversal training was under either the same delay as experienced in original learning or the alternate one. The results indicated that the delay variable, ineffective in original learning, affected reversal acquisition. The postcriterial trials had…
Psychology (4 works) · Developmental psychology (3 works) · Medicine (3 works) · Cognitive psychology (2 works) · Physiology (2 works) · Physiology (2 works) · Stress Responses and Cortisol (2 works) · Adrenalectomy (1 work) · Animal testing and alternatives (1 work) · Audiology (1 work)