Reducing demand for ineffective health remedies: overcoming the illusion of causality.
Objective: We tested a novel intervention for reducing demand for ineffective health remedies. The intervention aimed to empower participants to overcome the illusion of causality, which otherwise drives erroneous perceptions regarding remedy efficacy. Design: A laboratory experiment adopted a betwe...
| Publicado en: | Psychology & Health Vol. 33; no. 12; pp. 1472 - 1490 |
|---|---|
| Autores principales: | , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Dec2018
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=135115646&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 135115646 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08870446 7WK jtl: Psychology & Health issn: 08870446 maglogo: N pubinfo: dt: Dec2018 vid: 33 iid: 12 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 135115646 135115646 135115646 10.1080/08870446.2018.1508685 135115646 ppf: 1472 ppct: 18 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Reducing demand for ineffective health remedies: overcoming the illusion of causality. aug: au: MacFarlane, Douglas Hurlstone, Mark J. Ecker, Ullrich K. H. affil: School of Psychological Science, University of Western Australia, Perth, Australia sug: subj: Causality Attitude to Health Empowerment Consumer Attitudes Human Vitamins Dietary Supplements Costs and Cost Analysis Experimental Studies ab: Objective: We tested a novel intervention for reducing demand for ineffective health remedies. The intervention aimed to empower participants to overcome the illusion of causality, which otherwise drives erroneous perceptions regarding remedy efficacy. Design: A laboratory experiment adopted a between-participants design with six conditions that varied the amount of information available to participants (N = 245). The control condition received a basic refutation of multivitamin efficacy, whereas the principal intervention condition received a full contingency table specifying the number of people reporting a benefit vs. no benefit from both the product and placebo, plus an alternate causal explanation for inefficacy over placebo. Main outcome measures: We measured participants' willingness to pay (WTP) for multivitamin products using two incentivized experimental auctions. General attitudes towards health supplements were assessed as a moderator of WTP. We tested generalisation using ratings of the importance of clinical-trial results for making future health purchases. Results: Our principal intervention significantly reduced participants' WTP for multivitamins (by 23%) and increased their recognition of the importance of clinical-trial results. Conclusion: We found evidence that communicating a simplified full-contingency table and an alternate causal explanation may help reduce demand for ineffective health remedies by countering the illusion of causality. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|