{"id":{"repo_id":"u-iceland","oai_identifier":"oai:skemman.is:1946/53292"},"canonical_url":"https://search.dev.ndltd.org/etd/u-iceland/oai:skemman.is:1946/53292","repository":{"repo_id":"u-iceland","name":"University of Iceland","base_url":"https://skemman.is/oai/request"},"display":{"title":"Early treatment expectancy and credibility as predictors of outcome, dropout and early response in Behavioral Activation treatment for depression","abstract":"Patients’ beliefs about treatment outcomes and the credibility of treatment, commonly referred to as expectancy and credibility, have been associated with treatment outcomes, but are less frequently examined in relation to dropout and early response. The present study examined expectancy and credibility, measured after one session, in relation to (a) treatment outcomes, including depressive and anxiety symptoms, quality of life, remission, and response rate, (b) dropout, and (c) early response in behavioral activation (BA) for depression. Expectancy predicted post-treatment outcomes across several measures, although effect sizes were small to moderate. In contrast, credibility showed less consistent associations and did not contribute unique predictive value when controlling for expectancy. Neither expectancy nor credibility predicted early response or dropout. These findings suggest that expectancy may be a meaningful contributor to treatment outcomes, whereas credibility may exert its influence indirectly through its association with expectancy. The lack of association with early response, contrasted with associations with post-treatment outcomes, suggests that expectancy may not produce immediate symptom change but instead operates through processes that unfold over time. Taken together, these results highlight the importance of assessing expectancy while sustaining engagement throughout treatment.","abstract_html":"Patients’ beliefs about treatment outcomes and the credibility of treatment, commonly referred to as expectancy and credibility, have been associated with treatment outcomes, but are less frequently examined in relation to dropout and early response. The present study examined expectancy and credibility, measured after one session, in relation to (a) treatment outcomes, including depressive and anxiety symptoms, quality of life, remission, and response rate, (b) dropout, and (c) early response in behavioral activation (BA) for depression. Expectancy predicted post-treatment outcomes across several measures, although effect sizes were small to moderate. In contrast, credibility showed less consistent associations and did not contribute unique predictive value when controlling for expectancy. Neither expectancy nor credibility predicted early response or dropout. These findings suggest that expectancy may be a meaningful contributor to treatment outcomes, whereas credibility may exert its influence indirectly through its association with expectancy. The lack of association with early response, contrasted with associations with post-treatment outcomes, suggests that expectancy may not produce immediate symptom change but instead operates through processes that unfold over time. Taken together, these results highlight the importance of assessing expectancy while sustaining engagement throughout treatment.","abstract_has_math":false,"creators":["Jósúa Gabríel Davíðsson 2001-"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Háskóli Íslands"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2026,"date_issued":"2026-05-22T08:54:46Z","date_published":"2026-05-22T08:54:46Z","updated_at":"2026-07-27T21:37:05Z","subjects":["Hagnýt sálfræði","Þunglyndi","Atferlismeðferð"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1946/53292","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Háskóli Íslands"]},{"key":"dc:creator","label":"Author","values":["Jósúa Gabríel Davíðsson 2001-"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2026-05-22T08:54:42Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-22T08:54:42Z"]},{"key":"dc:date.issued","label":"Date","values":["2026-05-22T08:54:46Z"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Hagnýt sálfræði","Þunglyndi","Atferlismeðferð"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1946/53292"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Patients’ beliefs about treatment outcomes and the credibility of treatment, commonly referred to as expectancy and credibility, have been associated with treatment outcomes, but are less frequently examined in relation to dropout and early response. The present study examined expectancy and credibility, measured after one session, in relation to (a) treatment outcomes, including depressive and anxiety symptoms, quality of life, remission, and response rate, (b) dropout, and (c) early response in behavioral activation (BA) for depression. Expectancy predicted post-treatment outcomes across several measures, although effect sizes were small to moderate. In contrast, credibility showed less consistent associations and did not contribute unique predictive value when controlling for expectancy. Neither expectancy nor credibility predicted early response or dropout. These findings suggest that expectancy may be a meaningful contributor to treatment outcomes, whereas credibility may exert its influence indirectly through its association with expectancy. The lack of association with early response, contrasted with associations with post-treatment outcomes, suggests that expectancy may not produce immediate symptom change but instead operates through processes that unfold over time. Taken together, these results highlight the importance of assessing expectancy while sustaining engagement throughout treatment.","Mat skjólstæðinga á meðferðarárangri og trúverðugleika meðferðar, eða væntingar og trúverðugleiki, hafa verið tengdar við meðferðarárangur en eru sjaldnar skoðaðar í tengslum við brottfall og snemmsvörun (e. early response). Í þessari rannsókn voru væntingar og trúverðugleiki, metin eftir einn meðferðartíma, skoðuð í tengslum við (a) meðferðarárangur, þar á meðal einkenni þunglyndis og kvíða, lífsgæði, rénun og svörunarhlutfall, (b) brottfall og (c) snemmsvörun, í atferlisvirkjun (BA) við þunglyndi. Væntingar spáðu fyrir um árangur eftir meðferð meðal fjölda mælikvarða, þótt áhrifastærðir væru litlar til miðlungsstórar. Hins vegar sýndi trúverðugleiki veikari og óstöðugari tengsl og forspárgildi varð hverfandi þegar stjórnað var fyrir væntingar. Hvorki væntingar né trúverðugleiki spáðu fyrir um snemmsvörun eða brottfall. Þessar niðurstöður benda til þess að væntingar séu mikilvægur þáttur í meðferðarárangri, á meðan trúverðugleiki gæti haft óbein áhrif í gegnum tengsl sín við væntingar. Skortur á tengslum við snemmsvörun, samanborið við tengsl við árangur eftir meðferð, bendir til þess að væntingar leiði ekki til skjótrar einkennaminnkunar heldur virki þær í gegnum ferla sem þróast yfir meðferðarferlið. Í heild sinni undirstrika þessar niðurstöður mikilvægi þess að meta væntingar og viðhalda þátttöku yfir meðferðarferlið."]},{"key":"dc:title","label":"Title","values":["Early treatment expectancy and credibility as predictors of outcome, dropout and early response in Behavioral Activation treatment for depression","Væntingar um árangur og trúverðugleiki meðferðar sem forspárþættir um meðferðarárangur, brottfall og snemmsvörun í atferlisvirkjunarmeðferð við þunglyndi"]}]}],"canonical_facts":{"dc:contributor":["Háskóli Íslands"],"dc:creator":["Jósúa Gabríel Davíðsson 2001-"],"dc:date.accessioned":["2026-05-22T08:54:42Z"],"dc:date.available":["2026-05-22T08:54:42Z"],"dc:date.issued":["2026-05-22T08:54:46Z"],"dc:description.abstract":["Patients’ beliefs about treatment outcomes and the credibility of treatment, commonly referred to as expectancy and credibility, have been associated with treatment outcomes, but are less frequently examined in relation to dropout and early response. The present study examined expectancy and credibility, measured after one session, in relation to (a) treatment outcomes, including depressive and anxiety symptoms, quality of life, remission, and response rate, (b) dropout, and (c) early response in behavioral activation (BA) for depression. Expectancy predicted post-treatment outcomes across several measures, although effect sizes were small to moderate. In contrast, credibility showed less consistent associations and did not contribute unique predictive value when controlling for expectancy. Neither expectancy nor credibility predicted early response or dropout. These findings suggest that expectancy may be a meaningful contributor to treatment outcomes, whereas credibility may exert its influence indirectly through its association with expectancy. The lack of association with early response, contrasted with associations with post-treatment outcomes, suggests that expectancy may not produce immediate symptom change but instead operates through processes that unfold over time. Taken together, these results highlight the importance of assessing expectancy while sustaining engagement throughout treatment.","Mat skjólstæðinga á meðferðarárangri og trúverðugleika meðferðar, eða væntingar og trúverðugleiki, hafa verið tengdar við meðferðarárangur en eru sjaldnar skoðaðar í tengslum við brottfall og snemmsvörun (e. early response). Í þessari rannsókn voru væntingar og trúverðugleiki, metin eftir einn meðferðartíma, skoðuð í tengslum við (a) meðferðarárangur, þar á meðal einkenni þunglyndis og kvíða, lífsgæði, rénun og svörunarhlutfall, (b) brottfall og (c) snemmsvörun, í atferlisvirkjun (BA) við þunglyndi. Væntingar spáðu fyrir um árangur eftir meðferð meðal fjölda mælikvarða, þótt áhrifastærðir væru litlar til miðlungsstórar. Hins vegar sýndi trúverðugleiki veikari og óstöðugari tengsl og forspárgildi varð hverfandi þegar stjórnað var fyrir væntingar. Hvorki væntingar né trúverðugleiki spáðu fyrir um snemmsvörun eða brottfall. Þessar niðurstöður benda til þess að væntingar séu mikilvægur þáttur í meðferðarárangri, á meðan trúverðugleiki gæti haft óbein áhrif í gegnum tengsl sín við væntingar. Skortur á tengslum við snemmsvörun, samanborið við tengsl við árangur eftir meðferð, bendir til þess að væntingar leiði ekki til skjótrar einkennaminnkunar heldur virki þær í gegnum ferla sem þróast yfir meðferðarferlið. Í heild sinni undirstrika þessar niðurstöður mikilvægi þess að meta væntingar og viðhalda þátttöku yfir meðferðarferlið."],"dc:identifier.uri":["https://hdl.handle.net/1946/53292"],"dc:language.iso":["en"],"dc:subject":["Hagnýt sálfræði","Þunglyndi","Atferlismeðferð"],"dc:title":["Early treatment expectancy and credibility as predictors of outcome, dropout and early response in Behavioral Activation treatment for depression","Væntingar um árangur og trúverðugleiki meðferðar sem forspárþættir um meðferðarárangur, brottfall og snemmsvörun í atferlisvirkjunarmeðferð við þunglyndi"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T21:37:05Z"}