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[{"key": "dc.contributor.author", "value": "Irani, Fatemeh", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-05-28T13:53:51Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-05-28T13:53:51Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2025", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.isbn", "value": "978-952-86-0754-0", "language": null, "element": "identifier", "qualifier": "isbn", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/102848", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Sosiaalinen vaikuttaminen on ollut tutkimuksen kohteena 1950-luvulta saakka, ja sen neurokognitiivisia mekanismeja on alettu tutkia 2000-luvulla. Vaikuttamisen riippuvuus sosiaalisista l\u00e4hteist\u00e4 sek\u00e4 sen hermostolliset mekanismit ovat kuitenkin j\u00e4\u00e4neet v\u00e4h\u00e4iselle tutkimukselle. T\u00e4ss\u00e4 v\u00e4it\u00f6skirjassa tutkitaan vertaisten ja asiantuntijoiden antaman palautteen vaikutusta mielipiteen muutoksiin. Hermostollisia muutoksia mitattiin magnetoenkefalografian (MEG) avulla. Ensimm\u00e4isess\u00e4 osatutkimuksessa tarkasteltiin vertaisilta saadun palautteen vaikutusta suositteluaikeiden muutoksiin sovinnollisuuden persoonallisuuspiirteen mukaan jaetuissa ryhmiss\u00e4. Tutkimuksessa havaittiin, ett\u00e4 suositteluaikeet muuttuivat vertaisryhm\u00e4n palautteen ollessa negatiivisempi kuin yksil\u00f6n oma arvio. Hermostollisella tasolla vertaisryhm\u00e4n palaute synnytti suurempia her\u00e4tevasteita silloin, kun se oli ristiriidassa yksil\u00f6n oman arvion kanssa. Samoin ristiriidassa oleva palaute aiheutti muutoksia hermostollisissa oskillaatioissa theeta- ja beetakaistoilla. Matalan ja korkean sovinnollisuuden ryhm\u00e4t eiv\u00e4t eronneet k\u00e4ytt\u00e4ytymistasolla, mutta hermostollisissa oskillaatioissa havaittiin eroja. Toisessa osatutkimuksessa tarkastelimme vertaisryhm\u00e4n ja asiantuntijoiden antaman palautteen vaikutusta nuorten mielipiteiden muutoksiin. Koehenkil\u00f6t arvioivat ik\u00e4tovereiden sosiaalisuutta valokuvista. Tulokset osoittivat, ett\u00e4 osallistujien mielipiteet muuttuivat negatiivisen palautteen suuntaan. Lis\u00e4ksi vertaisryhm\u00e4n eri\u00e4v\u00e4 mielipide aiheutti suuremmat hermostolliset vasteet kuin asiantuntijoilta saatu. Ryhmien vaikutuksessa mielipiteen muutokseen ei kuitenkaan havaittu eroa. T\u00e4ss\u00e4kin tutkimuksessa beetataajuiset hermostolliset oskillaatiot erosivat sen mukaan, oliko saatu palaute eri\u00e4v\u00e4 vai yhtenev\u00e4 oman arvion kanssa. Kolmannessa osatutkimuksessa tarkasteltiin kuinka vertaisryhm\u00e4n ja asiantuntijaryhm\u00e4n palaute vaikutti vaatemieltymyksiin. Koehenkil\u00f6n arvio muuttui ryhmien palautteen suuntaan silloin, kun ryhmien antama arvio oli alhaisempi kuin koehenkil\u00f6n. Ryhmien v\u00e4lill\u00e4 havaittiin eroja hermostollisilla mittareilla, mutta ei k\u00e4ytt\u00e4ytymisen tasolla. T\u00e4ss\u00e4 tutkimuksessa her\u00e4tevasteet olivat voimakkaampia silloin, kun ryhm\u00e4n palaute oli yhtenev\u00e4ist\u00e4 oman arvion kanssa. Yhdess\u00e4 n\u00e4m\u00e4 sosiaalisen vaikuttamisen tutkimukset osoittavat, ett\u00e4 hermostolliset vasteet ovat herkki\u00e4 palautteen l\u00e4hteelle. K\u00e4ytt\u00e4ytymisen muutosten osalta tilanne on monisyisempi ja todenn\u00e4k\u00f6isesti vahvasti tilannesidonnainen.\n\nAvainsanat: Sosiaalinen vaikuttaminen, vertaisten vaikutus, asiantuntijoiden vaikutus, sovinnollisuus, suositukset, MEG", "language": "fin", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Social influence has been a focus of research since the 1950s, and its neurocognitive mechanisms have been investigated since the 2000s. However, the effects of different social sources on behavior change and the neural mechanisms underlying these influences are still understudied. This dissertation investigates these issues using peer and expert feedback in adults and adolescents and by recording concurrent neural dynamics associated with feedback processing using magnetoencephalography (MEG). Study I examined the influence of peer group feedback on individuals\u2019 recommendation change in high and low agreeable individuals. Recommendations were found to change consistently only when the feedback from peers was more negative than individuals own recommendation. On the neural level, peer feedback conflicting with the individual\u2019s opinion evoked stronger neural responses than non-conflicting feedback. Conflicting feedback also increased neural oscillations in the theta band and decreased oscillations in the beta band. The change in recommendation behavior was not different between the low and high agreeableness groups, but the neural oscillatory responses of the groups differed. Study II examined the effect of both peer and expert group feedback on adolescents\u2019 opinion change regarding the sociability of age-matched adolescents. Results showed that, again, participants\u2019 opinions changed in line with negative feedback. Conflict with peers evoked stronger neural responses than conflict with experts. Nevertheless, there was no greater conformity with peers. Moreover, a decrease in neural oscillations in the beta frequencies was observed in response to conflict compared to no-conflict condition. Study III examined how feedback from peer and expert groups affects clothing preferences in adults. Results showed that participants\u2019 opinions changed in line with negative feedback but showed no distinct conformity to the two social sources. On the neural level, however, there was a difference between conflict with peer and expert groups. Furthermore, no-conflict feedback evoked stronger neural responses than conflicting feedback. In summary, by exploring the behavioral manifestations and neural dynamics of social feedback, the present studies demonstrated that the source of social influence is distinctly reflected in neuronal responses; however, its effect on behavior appears to be more nuanced and probably context-dependent.\n\nKeywords: Social influence, peer influence, expert influence, agreeableness, recommendation, MEG", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Ville Korkiakangas (rikorkia@jyu.fi) on 2025-05-28T13:53:50Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-05-28T13:53:51Z (GMT). No. of bitstreams: 0\n Previous issue date: 2025", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.publisher", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": null, "element": "publisher", "qualifier": null, "schema": "dc"}, {"key": "dc.relation.ispartofseries", "value": "JYU Dissertations", "language": null, "element": "relation", "qualifier": "ispartofseries", "schema": "dc"}, {"key": "dc.title", "value": "Neural correlates of social influence in preference and behaviour change", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "doctoral thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:ISBN:978-952-86-0754-0", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Kasvatustieteiden ja psykologian tiedekunta", "language": null, "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Education and Psychology", "language": null, "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_db06", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.relation.issn", "value": "2489-9003", "language": null, "element": "relation", "qualifier": "issn", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author & University of Jyv\u00e4skyl\u00e4", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "doctoralThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "navigointi mahdollista", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "structural navigation", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "kuvilla vaihtoehtoiset kuvaukset", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "alternative textual descriptions for images", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "taulukot saavutettavia", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "tables accessible", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "looginen lukemisj\u00e4rjestys", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "logical reading order", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}]
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