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dc.contributor.authorBlanco Bregón, Fernando 
dc.contributor.authorMoreno Fernández, María Manuela
dc.identifier.citationBlanco F, Moreno-Fernández MM and Matute H (2020) When Success Is Not Enough: The Symptom Base-Rate Can Influence Judgments of Effectiveness of a Successful Treatment. Front. Psychol. 11:560273. [doi: 10.3389/fpsyg.2020.560273]es_ES
dc.description.abstractPatients’ beliefs about the effectiveness of their treatments are key to the success of any intervention. However, since these beliefs are usually formed by sequentially accumulating evidence in the form of the covariation between the treatment use and the symptoms, it is not always easy to detect when a treatment is actually working. In Experiments 1 and 2, we presented participants with a contingency learning task in which a fictitious treatment was actually effective to reduce the symptoms of fictitious patients. However, the base-rate of the symptoms was manipulated so that, for half of participants, the symptoms were very frequent before the treatment, whereas for the rest of participants, the symptoms were less frequently observed. Although the treatment was equally effective in all cases according to the objective contingency between the treatment and healings, the participants’ beliefs on the effectiveness of the treatment were influenced by the base-rate of the symptoms, so that those who observed frequent symptoms before the treatment tended to produce lower judgments of effectiveness. Experiment 3 showed that participants were probably basing their judgments on an estimate of effectiveness relative to the symptom base-rate, rather than on contingency in absolute terms. Data, materials, and R scripts to reproduce the figures are publicly available at the Open Science Framework:
dc.description.sponsorshipAgencia Estatal de Investigacion of the Spanish Government (AEI) PSI2017-83196-R RTI2018-096700-J-I00 PSI2016-78818-Res_ES
dc.description.sponsorshipBasque Government IT955-16es_ES
dc.rightsAtribución 3.0 España*
dc.subjectCausal learninges_ES
dc.subjectCognitive biaseses_ES
dc.subjectPatients’ beliefses_ES
dc.subjectCausal judgmentes_ES
dc.titleWhen Success Is Not Enough: The Symptom Base-Rate Can Influence Judgments of Effectiveness of a Successful Treatmentes_ES

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Atribución 3.0 España
Except where otherwise noted, this item's license is described as Atribución 3.0 España