{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/13852"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/13852","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"The effect of age at which enrichment is commenced on the test performance of the white rat","abstract":"Clarke (1968) hypothesised that the duration of the effect of early experience on behaviour would depend partly upon the potency and length of the experience and partly on age at application of this experience, but particularly on the amount and duration of subsequent reinforcement of the experience. He argued that later enrichment could reduce the effects of early sensory deprivation on the behaviour of the animal. This thesis investigates whether animals show equal effects of enrichment after longer periods of deprivation. or whether the effects of deprivation are irreversible. The thesis also investigates whether a critical period for enrichment is in operation in the juvenile phase of a rat's life. Results indicate that no critical period is in operation, and that animals show equal effects-of enrichment irrespective of the age at which they are enriched and irrespective of longer periods of deprivation.","abstract_html":"Clarke (1968) hypothesised that the duration of the effect of early experience on behaviour would depend partly upon the potency and length of the experience and partly on age at application of this experience, but particularly on the amount and duration of subsequent reinforcement of the experience. He argued that later enrichment could reduce the effects of early sensory deprivation on the behaviour of the animal. This thesis investigates whether animals show equal effects of enrichment after longer periods of deprivation. or whether the effects of deprivation are irreversible. The thesis also investigates whether a critical period for enrichment is in operation in the juvenile phase of a rat's life. Results indicate that no critical period is in operation, and that animals show equal effects-of enrichment irrespective of the age at which they are enriched and irrespective of longer periods of deprivation.","abstract_has_math":false,"creators":["Pace, Anthony Michael"],"institution":"Department of Psychology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Du Preez, Peter"],"committee_chairs":[],"committee_members":[],"year":1977,"date_issued":"1977","date_published":"1977","updated_at":"2026-07-22T22:22:57Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/13852","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Du Preez, Peter"]},{"key":"dc:creator","label":"Author","values":["Pace, Anthony Michael"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-09-14T08:11:02Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-09-14T08:11:02Z"]},{"key":"dc:date.issued","label":"Date","values":["1977"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Psychology"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Master Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Masters"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["MSc"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/13852"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Bibliography: leaf 123-133."]},{"key":"dc:description.abstract","label":"Abstract","values":["Clarke (1968) hypothesised that the duration of the effect of early experience on behaviour would depend partly upon the potency and length of the experience and partly on age at application of this experience, but particularly on the amount and duration of subsequent reinforcement of the experience. He argued that later enrichment could reduce the effects of early sensory deprivation on the behaviour of the animal. This thesis investigates whether animals show equal effects of enrichment after longer periods of deprivation. or whether the effects of deprivation are irreversible. The thesis also investigates whether a critical period for enrichment is in operation in the juvenile phase of a rat's life. Results indicate that no critical period is in operation, and that animals show equal effects-of enrichment irrespective of the age at which they are enriched and irrespective of longer periods of deprivation."]},{"key":"dc:title","label":"Title","values":["The effect of age at which enrichment is commenced on the test performance of the white rat"]}]}],"canonical_facts":{"dc:contributor.advisor":["Du Preez, Peter"],"dc:creator":["Pace, Anthony Michael"],"dc:date.accessioned":["2015-09-14T08:11:02Z"],"dc:date.available":["2015-09-14T08:11:02Z"],"dc:date.issued":["1977"],"dc:description":["Bibliography: leaf 123-133."],"dc:description.abstract":["Clarke (1968) hypothesised that the duration of the effect of early experience on behaviour would depend partly upon the potency and length of the experience and partly on age at application of this experience, but particularly on the amount and duration of subsequent reinforcement of the experience. He argued that later enrichment could reduce the effects of early sensory deprivation on the behaviour of the animal. This thesis investigates whether animals show equal effects of enrichment after longer periods of deprivation. or whether the effects of deprivation are irreversible. The thesis also investigates whether a critical period for enrichment is in operation in the juvenile phase of a rat's life. Results indicate that no critical period is in operation, and that animals show equal effects-of enrichment irrespective of the age at which they are enriched and irrespective of longer periods of deprivation."],"dc:identifier.uri":["http://hdl.handle.net/11427/13852"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Psychology"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["The effect of age at which enrichment is commenced on the test performance of the white rat"],"dc:type":["Master Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc"]},"updated_at":"2026-07-22T22:22:57Z"}