{"id":{"repo_id":"helsinki","oai_identifier":"oai:helda.helsinki.fi:10138/568488"},"canonical_url":"https://search.dev.ndltd.org/etd/helsinki/oai:helda.helsinki.fi:10138/568488","repository":{"repo_id":"helsinki","name":"University of Helsinki","base_url":"https://helda.helsinki.fi/server/oai/request"},"display":{"title":"Investigating the Relationship Between Subjective Sleep Quality and Statistical Language Learning","abstract":"Statistical learning is a universal cognitive mechanism that allows humans to detect patterns and regularities in their environment, playing a crucial role in various cognitive functions, including language acquisition. This research delved into the relationship between subjective sleep quality, measured using the PSQI (Pittsburgh Sleep Quality Index) questionnaire, and statistical language learning in adults. In two separate studies, participants' performances in statistical language learning were measured: Study 1 (N = 97) and its replication in Study 2 (N = 120). Both studies utilised the two-alternative forced choice (2AFC) recognition task, complemented by a confidence judgement rating. The results showed a significant learning effect above chance in both studies, highlighting adults' capability for statistical language learning. Explicit learning mechanisms significantly contributed to statistical language learning, highlighting the vital role of the declarative memory hippocampal-prefrontal cortex system in adult statistical language learning. Study 1 found that a logarithmic model most suitably represented the relationship between subjective sleep quality and statistical language learning performance. This model showed an initial drop in learning performance as subjective sleep quality declined, but performance stabilised with a further decline in subjective sleep quality. However, this relationship was not statistically significant in Study 2. While this research provides novel insights into the interplay between sleep quality and statistical language learning, future studies should consider subjective and objective sleep measures for a more comprehensive investigation. The research findings have implications for understanding the cognitive mechanisms underpinning language learning and the potential influence of sleep quality on these processes.","abstract_html":"Statistical learning is a universal cognitive mechanism that allows humans to detect patterns and regularities in their environment, playing a crucial role in various cognitive functions, including language acquisition. This research delved into the relationship between subjective sleep quality, measured using the PSQI (Pittsburgh Sleep Quality Index) questionnaire, and statistical language learning in adults. In two separate studies, participants' performances in statistical language learning were measured: Study 1 (N = 97) and its replication in Study 2 (N = 120). Both studies utilised the two-alternative forced choice (2AFC) recognition task, complemented by a confidence judgement rating. The results showed a significant learning effect above chance in both studies, highlighting adults' capability for statistical language learning. Explicit learning mechanisms significantly contributed to statistical language learning, highlighting the vital role of the declarative memory hippocampal-prefrontal cortex system in adult statistical language learning. Study 1 found that a logarithmic model most suitably represented the relationship between subjective sleep quality and statistical language learning performance. This model showed an initial drop in learning performance as subjective sleep quality declined, but performance stabilised with a further decline in subjective sleep quality. However, this relationship was not statistically significant in Study 2. While this research provides novel insights into the interplay between sleep quality and statistical language learning, future studies should consider subjective and objective sleep measures for a more comprehensive investigation. The research findings have implications for understanding the cognitive mechanisms underpinning language learning and the potential influence of sleep quality on these processes.","abstract_has_math":false,"creators":["Sholihat, Aliva"],"institution":"Helsingin yliopisto","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Helsingin yliopisto, Humanistinen tiedekunta","University of Helsinki, Faculty of Arts","Helsingfors universitet, Humanistiska fakulteten"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023","date_published":"2023","updated_at":"2026-07-27T19:56:17Z","subjects":["explicit learning","prefrontal cortex","PSQI","sleep quality","statistical language learning"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["URN:NBN:fi:hulib-202312124339"],"render_values":[{"text":"URN:NBN:fi:hulib-202312124339","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10138/568488","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Helsingin yliopisto, Humanistinen tiedekunta","University of Helsinki, Faculty of Arts","Helsingfors universitet, Humanistiska fakulteten"]},{"key":"dc:creator","label":"Author","values":["Sholihat, Aliva"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2023"]},{"key":"dc:publisher","label":"Institution","values":["Helsingin yliopisto","University of Helsinki","Helsingfors universitet"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["explicit learning","prefrontal cortex","PSQI","sleep quality","statistical language learning"]}]},{"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":["URN:NBN:fi:hulib-202312124339","http://hdl.handle.net/10138/568488"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Statistical learning is a universal cognitive mechanism that allows humans to detect patterns and regularities in their environment, playing a crucial role in various cognitive functions, including language acquisition. This research delved into the relationship between subjective sleep quality, measured using the PSQI (Pittsburgh Sleep Quality Index) questionnaire, and statistical language learning in adults. In two separate studies, participants' performances in statistical language learning were measured: Study 1 (N = 97) and its replication in Study 2 (N = 120). Both studies utilised the two-alternative forced choice (2AFC) recognition task, complemented by a confidence judgement rating. The results showed a significant learning effect above chance in both studies, highlighting adults' capability for statistical language learning. Explicit learning mechanisms significantly contributed to statistical language learning, highlighting the vital role of the declarative memory hippocampal-prefrontal cortex system in adult statistical language learning. Study 1 found that a logarithmic model most suitably represented the relationship between subjective sleep quality and statistical language learning performance. This model showed an initial drop in learning performance as subjective sleep quality declined, but performance stabilised with a further decline in subjective sleep quality. However, this relationship was not statistically significant in Study 2. While this research provides novel insights into the interplay between sleep quality and statistical language learning, future studies should consider subjective and objective sleep measures for a more comprehensive investigation. The research findings have implications for understanding the cognitive mechanisms underpinning language learning and the potential influence of sleep quality on these processes."]},{"key":"dc:title","label":"Title","values":["Investigating the Relationship Between Subjective Sleep Quality and Statistical Language Learning"]}]}],"canonical_facts":{"dc:contributor":["Helsingin yliopisto, Humanistinen tiedekunta","University of Helsinki, Faculty of Arts","Helsingfors universitet, Humanistiska fakulteten"],"dc:creator":["Sholihat, Aliva"],"dc:date.issued":["2023"],"dc:description.abstract":["Statistical learning is a universal cognitive mechanism that allows humans to detect patterns and regularities in their environment, playing a crucial role in various cognitive functions, including language acquisition. This research delved into the relationship between subjective sleep quality, measured using the PSQI (Pittsburgh Sleep Quality Index) questionnaire, and statistical language learning in adults. In two separate studies, participants' performances in statistical language learning were measured: Study 1 (N = 97) and its replication in Study 2 (N = 120). Both studies utilised the two-alternative forced choice (2AFC) recognition task, complemented by a confidence judgement rating. The results showed a significant learning effect above chance in both studies, highlighting adults' capability for statistical language learning. Explicit learning mechanisms significantly contributed to statistical language learning, highlighting the vital role of the declarative memory hippocampal-prefrontal cortex system in adult statistical language learning. Study 1 found that a logarithmic model most suitably represented the relationship between subjective sleep quality and statistical language learning performance. This model showed an initial drop in learning performance as subjective sleep quality declined, but performance stabilised with a further decline in subjective sleep quality. However, this relationship was not statistically significant in Study 2. While this research provides novel insights into the interplay between sleep quality and statistical language learning, future studies should consider subjective and objective sleep measures for a more comprehensive investigation. The research findings have implications for understanding the cognitive mechanisms underpinning language learning and the potential influence of sleep quality on these processes."],"dc:identifier.uri":["URN:NBN:fi:hulib-202312124339","http://hdl.handle.net/10138/568488"],"dc:language.iso":["eng"],"dc:publisher":["Helsingin yliopisto","University of Helsinki","Helsingfors universitet"],"dc:subject":["explicit learning","prefrontal cortex","PSQI","sleep quality","statistical language learning"],"dc:title":["Investigating the Relationship Between Subjective Sleep Quality and Statistical Language Learning"]},"updated_at":"2026-07-27T19:56:17Z"}