The criterion validity of willingness to pay methods: A systematic review and meta-analysis of the evidence

Kanya, Lucy; Sanghera, Sabina; Lewin, Arie Y.; Fox-Rushby, Julia

doi:10.1016/j.socscimed.2019.04.015

Cited by 37 publications

(22 citation statements)

References 61 publications

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“…Our findings confirm a pattern of urban participants being willing to pay more than the rural participants. While the presence of hypothetical bias questions the validity and usefulness of the stated WTP values, we note that the magnitude of this bias in our study is relatively small compared to previous studies (e.g., Kanya, Sanghera, Lewin, & Fox-Rushby, 2019;List & Gallet, 2001).…”

Section: Participants Were Willing To Pay For Pcfpcontrasting

confidence: 65%

Caretakers' perceptions and willingness‐to‐pay for complementary food in urban and rural Cambodia

Nurhasan

Prima

Olsen

et al. 2021

Maternal & Child Nutrition

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Inadequate child nutrition during the first '1000 days' is widespread in Cambodia, resulting in a high prevalence of child malnutrition. Access to processed complementary food in packages (PCFP) may support caretakers in improving diet of young children. This study aimed to evaluate the caretakers' preferences and willingnessto-pay (WTP) for PCFP in Cambodia. The study was conducted in urban and rural settings, involving 520 caretakers with children aged 7-24 months in Phnom Penh (urban) and Prey Veng (rural). Four PCFPs were included: a commercial brand, a social-commercial brand, a worldwide distributed fortified complementary food aid product (CSB++) and an experimental fortified rice-and-fish-based PCFP developed in Cambodia (WF-L). Sensory analysis was conducted for all products, stated WTP was assessed for three products (excluding CSB++) and actual WTP experiment was conducted on WF-L only. Our results show that overall, WF-L was preferred by the rural participants over food aid CSB++. Further improvements in the organoleptic qualities of WF-L should focus on consistency and taste. The participants were, on average, willing to pay 1,667 Cambodian riel (KHR, $0.4) and 1,192 KHR ($0.3) in urban and rural settings, respectively, for 35 g of WF-L. We also found that despite being nutritionally inadequate, most participants considered homemade porridge to be healthier, more practical and preferred by the children. Therefore improving the quality of homemade foods merits urgent consideration. When applying PCFP in nutrition programmes as a supplementary option to homemade complementary foods, locally produced products could be a more viable supplementary option than global food aid.

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Section: Participants Were Willing To Pay For Pcfpcontrasting

confidence: 65%

Caretakers' perceptions and willingness‐to‐pay for complementary food in urban and rural Cambodia

Nurhasan

Prima

Olsen

et al. 2021

Maternal & Child Nutrition

View full text Add to dashboard Cite

show abstract

“…It is also unclear if the recruitment of a convenience sample via an online platform with fixed payment rate might have impacted results for the willingness-to-seek measure, as the measure requires interested participants to extend their time commitment. Indeed, although there is some evidence to suggest that results obtained via auctions may be comparable for hypothetical and real monetary incentives (e.g., , there can at times be substantial heterogeneity between the two (e.g., Kanya et al, 2019;Voelckner, 2006), which may apply to all our behavioural tasks. We therefore recommend that future research delve deeper into each individual measure with larger samples (ideally: not relying on convenience sampling or timeconstrained participants); investigate the role of incentives (e.g., by offering actual monetary endowments and products); and incorporate more realistic group-based social-media simulations across a range of topics.…”

Section: Discussionmentioning

confidence: 99%

A comparison of prebunking and debunking interventions for implied versus explicit misinformation

Tay

Hurlstone

Kurz

et al. 2021

British J of Psychology

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Psychological research has offered valuable insights into how to combat misinformation.The studies conducted to date, however, have three limitations. First, pre-emptive ("prebunking") and retroactive ("debunking") interventions have mostly been examined in parallel, and thus it is unclear which of these two predominant approaches is more effective.Second, there has been a focus on misinformation that is explicitly false, but misinformation that uses literally true information to mislead is common in the real world. Finally, studies have relied mainly on questionnaire measures of reasoning, neglecting behavioural impacts of misinformation and interventions. To offer incremental progress towards addressing these three issues, we conducted an experiment (N = 735) involving misinformation on fair trade. We contrasted the effectiveness of prebunking versus debunking and the impacts of implied versus explicit misinformation, and incorporated novel measures assessing consumer behaviours (i.e., willingness-to-pay; information seeking; online misinformation promotion) in addition to standard questionnaire measures. In general, we found debunking to be more effective than prebunking, although both were able to reduce misinformation reliance. We also found that individuals tended to rely more on explicit than implied misinformation both with and without interventions.

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Section: Discussionmentioning

confidence: 99%

A Comparison of Prebunking and Debunking Interventions for Implied versus Explicit Misinformation

Lq¹,

Mj²,

Kurz³

et al. 2021

Preprint

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Psychological research has offered valuable insights into how to combat misinformation. The studies conducted to date, however, have three limitations. First, pre-emptive (“prebunking”) and retroactive (“debunking”) interventions have mostly been examined in parallel, and thus it is unclear which of these two predominant approaches is more effective. Second, there has been a focus on misinformation that is explicitly false, but misinformation that uses literally true information to mislead is common in the real world. Finally, studies have relied mainly on questionnaire measures of reasoning, neglecting behavioural impacts of misinformation and interventions. To offer incremental progress towards addressing these three issues, we conducted an experiment (N = 735) involving misinformation on fair trade. We contrasted the effectiveness of prebunking versus debunking and the impacts of implied versus explicit misinformation, and incorporated novel measures assessing consumer behaviours (i.e., willingness-to-pay; information seeking; online misinformation promotion) in addition to standard questionnaire measures. In general, we found debunking to be more effective than prebunking, although both were able to reduce misinformation reliance. We also found that individuals tended to rely more on explicit than implied misinformation both with and without interventions.

show abstract

The criterion validity of willingness to pay methods: A systematic review and meta-analysis of the evidence

Cited by 37 publications

References 61 publications

Caretakers' perceptions and willingness‐to‐pay for complementary food in urban and rural Cambodia

Caretakers' perceptions and willingness‐to‐pay for complementary food in urban and rural Cambodia

A comparison of prebunking and debunking interventions for implied versus explicit misinformation

A Comparison of Prebunking and Debunking Interventions for Implied versus Explicit Misinformation

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