Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Defensive reactions to health-promoting information: an overview and implications for future research
Riet, J.P. van 't; Ruiter, R.A.C. - \ 2013
Health Psychology Review 7 (2013). - ISSN 1743-7199 - p. S104 - S136.
protection-motivation theory - hiv-prevention interventions - fear-arousing communications - cigarette warning labels - self-exempting beliefs - parallel process model - emotion regulation - experiential avoidance - mental-health - smoking-cessation
It is a common finding that recipients of threatening health-promoting information are motivated to dismiss or disregard the information, thus reacting defensively'. This article gives an overview of the literature on defensive reactions to health-promoting information. A distinction is made between: (1) avoidance, (2) denial, (3) cognitive reappraisal and (4) suppression. Although these defensive reactions have been studied repeatedly and thoroughly, we propose that a number of questions remain unanswered. First, little is known about whether avoidance, denial, cognitive reappraisal and suppression have distinct or similar effects on emotional experience and health-conducive behaviour. Second, little is known about the development of defensive reactions over time in case recipients are repeatedly exposed to health-promoting information, which is often the case in a real-life setting. In the present article, we present preliminary answers to these questions, suggesting that cognitive reappraisal has greater potential to result in effective emotion regulation and is more likely to impede healthy behaviour than the other three strategies. We also propose that defensive reactions to health-promoting information do not always reduce health-conducive responses but can co-occur with more adaptive responses or even facilitate them. Finally, we present a hypothesised model of the development of defensiveness over time.
Preaching to the choir? The influence of personal relevance on the effects of gain- and loss-framed health-promoting messages
Riet, J.P. van 't; Ruiter, R. de; Vries, H. de - \ 2012
Journal of Health Psychology 17 (2012)5. - ISSN 1359-1053 - p. 712 - 723.
parallel process model - self-affirmation - fear appeals - college-students - behavior - metaanalysis - risk - information - perceptions - persuasion
This article examines the moderating influence of personal relevance on the persuasive effects of gain- and loss-framed messages. We assessed current behaviour as a proxy for personal relevance, provided 169 participants with gain- and loss-framed messages advocating skin self-examination (SSE) and assessed intention to engage in SSE as the outcome measure. The results showed that loss-framed information was more persuasive than gain-framed information, but only for low-relevance participants. This suggests that loss-framed information might be mainly effective for recipients who need little persuading and, in fact, runs the risk of 'preaching to the choir'.
Avoidance orientation moderates the effect of threatening messages
Riet, J.P. van 't; Ruiter, R.A.C. ; Vries, H. de - \ 2012
Journal of Health Psychology 17 (2012)1. - ISSN 1359-1053 - p. 14 - 25.
protection motivation theory - fear appeals - individual-differences - behavioral activation - college-students - planned behavior - health messages - metaanalysis - responses - cognition
This study investigated the influence of individual differences in people's dispositional avoidance orientation on the persuasive effects of low- and high-threat messages promoting moderate drinking. First, participents (N = 99) individual differences in avoidance orientation were assessed, after which they were provided with either high- or low-threat messages about the consequences of drinking too much alcohol. The primary outcome measures were information acceptance, attitude and intention. Results showed that participants low in avoidance orientation were more likely to be persuaded by the low-threat message, whereas participants high in avoidance orientation were more likely to be persuaded by the high-threat message.
Understanding farmers' decisions with regard to animal welfare: The case of changing to group housing for pregnant sows
Lauwere, C.C. de; Asseldonk, M.A.P.M. van; Riet, J.P. van 't; Hoop, J.G. de; Pierick, E. ten - \ 2012
Livestock Science 143 (2012)2-3. - ISSN 1871-1413 - p. 151 - 161.
planned behavior - conservation behavior - flemish farmers - habit strength - udder health - attitudes - communication - stakeholder - consumption - intentions
Improving animal welfare in livestock farming requires changing the behaviour of many stakeholders. Farmers have to take proper actions on their farm to improve animal welfare, retailers have to market animal-friendly products and consumers have to purchase these products. The theory of planned behaviour (TPB) is a widely applied model that can be used to explain behaviour related to conscious choices. The model also gives indications for possible interventions needed to stimulate desired behaviour. In the current study the behaviour of farmers with respect to the change to group housing for pregnant sows was explored. A computer-assisted personal interviewing approach was applied to elicit behavioural beliefs of 105 farmers. Data analysis revealed that TPB was useful for understanding the farmers' choices with regard to the change to group housing, and that it provides indications for possible interventions to support farmers who have not yet changed to group housing. In contrast to farmers who had made the change already, these farmers thought that it was unlikely that group housing was good for animal welfare, and, related to that, that it was likely that it would lead to more tail biting and less work pleasure. They also perceived to a lesser degree that persons relevant to them expected them to change to group housing or that farmers comparable to them had already changed. Additionally, farmers who had not changed yet and farmers who had changed partly had lower scores for questions related to their skills with regard to the managing of group-housed sows and their knowledge about the required building process. So, providing these farmers with information to increase their knowledge with regard to group-housed sows and the required building process might be a fruitful intervention. However, it should be carefully considered how this information is effectively communicated.
Consumer & Behaviour Group on track? Food choice research at the LEI Consumer & Behaviour group benchmarked against international literature
Ronteltap, A. ; Riet, J.P. van 't; Sijtsema, S.J. - \ 2011
The Hague : LEI, part of Wageningen UR (LEI-memorandum 11-040)
Self-efficacy as a potential moderator of the effects of framed health messages
Werrij, M.Q. ; Ruiter, R.A.C. ; Riet, J.P. van 't; Vries, H. de - \ 2011
Journal of Health Psychology 16 (2011)2. - ISSN 1359-1053 - p. 199 - 207.
fear appeals - planned behavior - psychology - motivation - women
This study focuses on self-efficacy as a potential moderator of the effects of gain- and loss-framed health messages. Undergraduate students (N = 124) received a gain- or loss-framed message about consuming ecological meat. The data revealed that for participants high in self-efficacy, the gain-framed message resulted in consuming more ecological meat than the loss-framed message. Moreover it was found that – within the gain-frame condition – participants low in self-efficacy scored higher on measures of defensive processing than participants high in self-efficacy. This study provides further evidence for the role of self-efficacy as a potential moderator of the effects of framed health messages
The importance of habits in eating behaviour: an overview and recommendations for future research.
Riet, J.P. van 't; Sijtsema, S.J. ; Dagevos, H. - \ 2011
Appetite 57 (2011)3. - ISSN 0195-6663 - p. 585 - 596.
travel mode choices - planned behavior - self-control - food-consumption - past behavior - implementation intentions - atherosclerosis risk - motivational control - regulatory success - physical-activity
There is ample evidence to suggest that a significant part of daily eating behaviours consists of habits. In line with this, the concept of habit is increasingly incorporated into studies investigating the behavioural and psychosocial determinants of food choice, yielding evidence that habit is one of the most powerful predictors of eating behaviour. Research shows that habitual behaviour is fundamentally different from non-habitual behaviour: when behaviour is habitual, people require little information to make decisions, intentions are poor predictors of behaviour, and behaviour is triggered by situational cues. These insights have vast implications for research in the food domain that are only just beginning to be addressed. Also, theorizing on habits has important implications for behaviour change interventions, yet few interventions that are based on habit theory have been tested in a food context. The present article provides an overview of habit research and discusses possibilities to increase our knowledge of the role of habits in eating behaviour. It is shown that interventions targeting habitual behaviour can try to (i) change the situation that triggers the habitual behaviour, (ii) promote or inhibit the habitual response and (iii) change relevant contingencies. These insights can act as a starting point for future intervention research
Duurzaam inkopen is wennen
Riet, J.P. van 't - \ 2011
Kennis Online 2011 (2011)14 juni. - p. 4 - 4.
consumentengedrag - houding van consumenten - duurzaamheid (sustainability) - koopgewoonten - voedingsmiddelen - consumer behaviour - consumer attitudes - sustainability - purchasing habits - foods
Niet alleen bestuursvoorzitters in de agribusiness, ook consumenten zeggen dat ze duurzaamheid belangrijk vinden. Toch heeft duurzaam voedsel maar een marktaandeel van 2,5 procent. Dat komt omdat de consument een gewoontedier is. Kennisbasisonderzoek legde de basis voor inzicht daarin.
Voedselbalans 2011 : Dl. 2 Consumenten
Onwezen, M.C. ; Riet, J.P. van 't; Bartels, J. - \ 2011
Den Haag : LEI Wageningen UR - ISBN 9789086155095 - 68
consumentengedrag - houding van consumenten - voedselconsumptie - voedselvoorkeuren - consumentenonderzoeken - voedselinkoop - keuzegedrag - voeding en gezondheid - duurzaamheid (sustainability) - consumer behaviour - consumer attitudes - food consumption - food preferences - consumer surveys - food purchasing - choice behaviour - nutrition and health - sustainability
In dit deelrapport van de Voedselbalans is een grootschalig vragenlijst-onderzoek gehouden onder een groep consumenten die representatief voor de Nederlandse bevolking is. Het belangrijkste doel van dit onderzoek was om te begrijpen waarom consumenten de voedingsmiddelen kiezen die ze kiezen.
Voedselbalans 2011 : Dl. 1 Dynamiek in duurzaam
Backus, G.B.C. ; Meeusen, M.J.G. ; Dagevos, H. ; Riet, J.P. van 't; Bartels, J. ; Onwezen, M.C. ; Reinders, M.J. ; Winter, M.A. de; Grievink, J.W. - \ 2011
Den Haag : LEI Wageningen UR - ISBN 9789086155088 - 56
consumentengedrag - voedselconsumptie - duurzaamheid (sustainability) - duurzame ontwikkeling - voedingsmiddelen - consumer behaviour - food consumption - sustainability - sustainable development - foods
De Voedselbalans werkt met een model waarin het gedrag van consumenten en aanbieders wordt beschreven. Daarbij gaat het om wetenschappelijk onderbouwde factoren. De resultaten van het onderzoek worden vertaald in handelingsperspectieven.
Overheidscommunicatie over voedsel; De kracht van de tweezijdige boodschap
Wagenberg, C.P.A. van; Asselt, E.D. van; Fischer, A.R.H. ; Riet, J.P. van 't; Ruissen, A. ; Temme, E.H.M. ; Wijk-Jansen, E.E.C. van - \ 2011
Den Haag : LEI, onderdeel van Wageningen UR (LEI-rapport : Onderzoeksveld Markt & ketens ) - ISBN 9789086154951 - 83
regeringscampagnes - overheidsbeleid - voedselconsumptie - communicatie - duurzaamheid (sustainability) - voedselveiligheid - voeding en gezondheid - dierenwelzijn - consumenteninformatie - dierlijke productie - government campaigns - government policy - food consumption - communication - sustainability - food safety - nutrition and health - animal welfare - consumer information - animal production
Op verzoek van het ministerie van EL&I en het ministerie van VWS heeft het LEI de huidige communicatie vanuit de overheid over de duurzaamheid, gezondheid en veiligheid van voedsel geanalyseerd en verbeterpunten hiervoor geïdentificeerd. De overheid verbetert de betrouwbaarheid en daarmee de effectiviteit van haar communicatie over de duurzaamheid, gezondheid en veiligheid van voedsel door zowel over positieve als negatieve aspecten te communiceren in dezelfde boodschap in plaats van in verschillende boodschappen.
Investigating message-framing effects in the context of a tailored intervention promoting physical activity.
Riet, J.P. van 't; Ruiter, R.A.C. ; Werrij, M.Q. ; Vries, H. de - \ 2010
Health Education Research 25 (2010)2. - ISSN 0268-1153 - p. 343 - 354.
loss-framed messages - health messages - planned behavior - implementation intentions - exercise adherence - prospect-theory - regulatory fit - computer - persuasion - participation
Health-promoting messages can be framed in terms of the gains associated with healthy behaviour or the losses associated with unhealthy behaviour. It has been argued that gain-framed messages promoting physical activity (PA) are more effective than loss-framed messages, but empirical findings are inconsistent. Also, no previous studies investigated the effects of gain- and loss-framed messages in the context of a computer-tailored PA intervention. In this study, we provided participants with computer-generated tailored feedback concerning their PA levels. In total, 787 participants entered in the study, of whom 299 completed all measures at a 3-month follow-up. We investigated whether gain- and loss-framed messages promoting PA affected information acceptance, attitude, intention and behaviour differently. The results showed that gain-framed messages resulted in stronger intentions to be physically active than loss-framed messages. This did not result in a significant increase in actual PA, however, as measured by a 3-month follow-up assessment. For information acceptance and attitude, a non-significant advantage of gain-framed messages was found. All effects had small effect sizes. Thus, whereas gain-framed information might be more persuasive than loss-framed information when it comes to promoting PA, the differences between gain- and loss-framed messages are likely to be small.
Examining the influence of self-efficacy on message-framing effects: reducing salt consumption in the general population
Riet, J.P. van 't; Ruiter, R.A.C. ; Smerecnik, C. ; Vries, H. de - \ 2010
Basic and Applied Social Psychology 32 (2010)2. - ISSN 0197-3533 - p. 165 - 172.
loss-framed messages - parallel process model - healthy behavior
Health-promoting messages can be framed in terms of the gains associated with healthy behavior or the losses associated with unhealthy behavior. Studies show inconsistent results as to which type of framing is more effective. In this study, we investigated whether participants' self-efficacy to decrease salt intake would moderate the effects of gain- and loss-framed messages promoting a low-salt diet on information acceptance, intention, and behavior. We hypothesized that loss-framed messages would more effectively decrease salt intake than gain-framed messages, but only when participants had high self-efficacy. A total of 575 adults, recruited from an Internet panel, took part in the study. Half of the participants received self-efficacy enhancing information, whereas the other half received no such information. After this self-efficacy manipulation, half of the participants received a gain-framed and half of the participants received a loss-framed message promoting a low-salt diet. Information acceptance and intention were assessed at immediate posttest and salt consumption was assessed at a 3-week follow-up. The results revealed the hypothesized effect on behavior. However, the interaction between self-efficacy and framing on salt consumption was not mediated by measures of information acceptance and intention to reduce salt intake. Our results suggest that messages stressing losses may be more effective than messages stressing gains in decreasing salt intake but only in persons with high self-efficacy to do so.
Distinct pathways to persuasion: the role of affect in message-framing effects.
Riet, J.P. van 't; Ruiter, R.A.C. ; Werry, M.Q. ; Candel, M.J.J.M. ; Vries, H. de - \ 2010
European Journal of Social Psychology 40 (2010)7. - ISSN 0046-2772 - p. 1261 - 1276.
framed health messages - parallel process model - positive affect - prospect-theory - fear appeals - metaanalysis - congruency - behaviors - mood - information
Health-promoting messages can be framed in terms of the gains that are associated with healthy behaviour (gain frame) or the losses that are associated with unhealthy behaviour (loss frame). In the present research, we examined the role of positive and negative affect in the persuasive effects of gain- and loss-framed health-promoting information. Experiment 1 (N¿=¿98) showed that gain-framed information resulted in higher levels of information acceptance than loss-framed information and that this effect was mediated by positive affect. The results of Experiment 2 (N¿=¿129) showed that gain-framed information resulted in higher levels of information acceptance and attitude, an effect that was again mediated by positive affect. In addition, loss-framed information resulted in more negative affect than gain-framed information and negative affect increased participants' intention to engage in the healthy behaviour. These results suggest that affect may be of great importance in the persuasion process and may be particularly helpful to explain the underlying mechanisms of message framing effects. The findings also suggest that gain- and loss-framed messages offer distinct pathways to persuasion.
Investigating Predictors of Visiting, Using and Revisiting an Online Health-Communication Programme: A Longitudinal Study
Riet, J.P. van 't; Crutzen, R. ; Vries, H. de - \ 2010
Journal of Medical Internet Research 12 (2010)3. - ISSN 1438-8871
physical-activity interventions - of-the-literature - internet use - public-health - life-style - behaviors - computer - exposure - dissemination - metaanalysis
Background: Online health communication has the potential to reach large audiences, with the additional advantages that it can be operational at all times and that the costs per visitor are low. Furthermore, research shows that Internet-delivered interventions can be effective in changing health behaviors. However, exposure to Internet-delivered health-communication programs is generally low. Research investigating predictors of exposure is needed to be able to effectively disseminate online interventions. Objective: In the present study, the authors used a longitudinal design with the aim of identifying demographic, psychological, and behavioral predictors of visiting, using, and revisiting an online program promoting physical activity in the general population. Methods: A webpage was created providing the public with information about health and healthy behavior. The website included a “physical activity check,” which consisted of a physical activity computer-tailoring expert system where visitors could check whether their physical activity levels were in line with recommendations. Visitors who consented to participate in the present study (n = 489) filled in a questionnaire that assessed demographics, mode of recruitment, current physical activity levels, and health motivation. Immediately after, participants received tailored feedback concerning their current physical activity levels and completed a questionnaire assessing affective and cognitive user experience, attitude toward being sufficiently physically active, and intention to be sufficiently physically active. Three months later, participants received an email inviting them once more to check whether their physical activity level had changed. Results: Analyses of visiting showed that more women (67.5%) than men (32.5%) visited the program. With regard to continued use, native Dutch participants (odds ratio [OR] = 2.81, 95% confidence interval [CI] = 1.16-6.81, P = .02) and participants with a strong motivation to be healthy (OR = 1.46, CI = 1.03-2.07, P = .03) were most likely to continue usage of the program. With regard to revisiting, older participants (OR = 1.04, CI = 1.01-1.06, P = .01) and highly educated participants (OR = 4.69, CI = 1.44-15.22, P = .01) were more likely to revisit the program after three months. In addition, positive affective user experience predicted revisiting (OR = 1.64, CI = 1.12-2.39, P = .01). Conclusions: The results suggest that online interventions could specifically target men, young people, immigrant groups, people with a low education, and people with a weak health motivation to increase exposure to these interventions. Furthermore, eliciting positive feelings in visitors may contribute to higher usage rates.
Investigating the effects of marketing communication on the adoption of innovative fruit products: A choice experiment.
Riet, Jonathan van 't - \ 2010
Investigating the effects of marketing claims on the adoption of innovative fruits and fruit products: A choice experiment.
Riet, J.P. van 't; Onwezen, M.C. ; Bartels, J. ; Kraszewska, M. ; Briz, T. - \ 2010
Den Haag : LEI
Eetgewoonten van laagopgeleiden
Meeusen, M.J.G. ; Wijk, E.E.C. van; Hoogendam, K. ; Ronteltap, A. ; Riet, J.P. van 't - \ 2010
Den Haag : LEI, onderdeel van Wageningen UR (Rapport / LEI : Onderzoeksveld Consumenten & gedrag ) - ISBN 9789086154340 - 101
voedingsgewoonten - eten - sociaal-economische positie - nederland - voedselconsumptie - feeding habits - eating - socioeconomic status - netherlands - food consumption
Dit rapport belicht de resultaten van kwalitatief onderzoek naar de achtergronden van ongezond eetgedrag van mensen met een lage opleiding in Nederland.
Consument op automatische piloot laat zich moeilijk verleiden
Riet, J.P. van 't - \ 2010
Kennis Online 7 (2010)okt. - p. 3 - 5.
gezondheidsbevordering - consumentengedrag - levensstijl - voedselconsumptie - voeding en gezondheid - health promotion - consumer behaviour - lifestyle - food consumption - nutrition and health
Mensen verleiden om gezond te leven is lastiger dan je denkt. Je maakt niet de hele dag rationele keuzes. En met eten alom aanwezig, val je al snel voor instant genot. Wat helpt zijn gezonde alternatieven en meer ruimte om te bewegen. Mensen leren om zichzelf te beheersen is misschien wel minstens zo effectief.
Self-efficacy moderates message-framing effects: The case of skin-cancer detection
Riet, J.P. van 't; Ruiter, R.A.C. ; Werrij, M.Q. ; Vries, H. de - \ 2010
Psychology and Health 25 (2010)3. - ISSN 0887-0446 - p. 339 - 349.
parallel process model - gain-framed messages - risk information - healthy behavior - motivation - perspective - persuasion - attitudes - responses - appeals
Health-promoting messages can be framed in terms of the gains associated with healthy behaviour, or the losses associated with unhealthy behaviour. Studies show inconsistent results as to which type of framing is more effective. In this study, we examined the influence of self-efficacy to perform skin self-examination on the effects of gain- and loss-framed skin-cancer detection messages among 124 university students. For participants with high self-efficacy, a loss-framed message resulted in a higher intention to perform skin self-examination than a gain-framed message. For participants with low self-efficacy, there were no differences in intention between the gain- and loss-framed message conditions. Our results suggest that self-efficacy levels play an important role in message-framing effects. For health communication strategies promoting the active detection of skin-cancer symptoms, messages stressing losses may be more effective than messages stressing gains, but only in persons with high self-efficacy. In addition, our results suggest that health promoting messages can be framed to match recipients' self-efficacy levels
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