Evaluation Of Conditions Research Articles

The timing-dependent effects of stress-induced cortisol release on evaluative conditioning

The neuro-physiological response to stress has far-reaching implications for learning and memory processes. Here, we examined whether and how the stress-induced release of cortisol, following the socially-evaluated cold pressor test, influenced the acquisition of preferences in an evaluative conditioning (EC) procedure. We found that when the stressor preceded the evaluation phase, cortisol responders showed decreased evaluative conditioning effects. By contrast, impairing effects of a stressor-induced cortisol release before encoding were not found. Moreover, explicit memory was not found to be affected by the stressor or its timing. Implications of the timing-dependent effects of stress-induced cortisol release on EC and the relation between stress and associative memory are discussed.

Effects of Evaluative Conditioning on Implicit Evaluation of Alcohol and Drinking Behaviors: A Direct Replication.

Recent research suggests that evaluative conditioning (EC) can change implicit evaluations of alcohol and reduce drinking behaviors among college students (Houben et al., 2010a). This research has been conceptually replicated in two previous studies. To date, however, no direct and independent replication of the original study has been performed. In this paper, we report a high-powered direct replication of Houben et al.'s (2010a) study. About 168 French college students took part in this preregistered study. Drinking behavior was assessed before and 2 weeks after the intervention. The intervention consisted of 120 trials of words related to alcoholic beverages or soft drinks paired with neutral, positive or negative pictures. The two conditions were factually equivalent and differed only in the repeated pairing between alcohol-related words and negative pictures; in the EC condition, but not in the control condition, alcohol-related words were systematically paired with negative pictures. EC did not change participants' implicit evaluations of alcohol and drinking behaviors. However, EC reduced drinking behaviors among hazardous drinkers. Yet, further non-preregistered Bayesian analysis did not provide much support for this hypothesis. This high-powered preregistered direct replication of Houben et al.'s (2010a) study suggests that the original effects are more fragile than initially thought. The effect of EC on drinking behaviors may be restricted to heavy drinkers, and we found no evidence that this effect is mediated by a change in implicit attitudes. It is necessary to perform further studies to test the original effects in clinical populations.

Cognitive Load Impairs Evaluative Conditioning, Even When Individual CS and US Stimuli are Successfully Encoded

Cognitive load has been shown to reduce both Evaluative Conditioning (EC) effects and CS-US pairing memory. This suggests the successful encoding of CS-US pairings is required for eliciting EC effects. However, an alternative account may be that cognitive load impairs the encoding of individual CS or US stimuli in the first place. We examined this possibility by manipulating the presence or absence of an auditory two-back task at learning, and by measuring the memory for both individual CS and US stimuli and for their pairings. Cognitive load reduced memory for CSs, USs, and CS-US pairings. Of importance, however, it disrupted EC even when the encoding of individual CSs and USs composing a pair was preserved. A mediation analysis also supported the assumption cognitive load reduces EC effects because it hampers the encoding of CS-US relations. This confirms the encoding of CS-US relation is a critical, yet non-efficient, contributor to EC.

Evaluation during the extinction procedure causes extinction in evaluative conditioning

After repeated pairing of a neutral stimulus (the conditioned stimulus or CS) and an affective event (the unconditioned stimulus or US), the stimulus can elicit responses that are evoked by the affective event. The acquired response decreases throughout solo presentations of a stimulus, which is known as extinction. Evaluative conditioning (EC) experiments have showed both extinction and resistance to extinction, while Pavlovian conditioning (PC) experiments have usually showed extinction. The present study hypothesized that repeated evaluation during the extinction procedure develops inhibitory learning of stimulus-response relationships then causes extinction, based on the inhibitory learning perspective of PC. Four experiments examined the effect of repeated evaluation while eliminating alternative explanations other than inhibitory learning, i.e., local CS-US contingency and contextual discriminability (Experiment 2); attention to CS, prolonged time, and additional CS presentations (Experiment 3); and inhibition of the output response and forgetting (Experiment 4). The results demonstrated extinction as well as resistance to extinction, consistent with the hypothesis. Possible content of the inhibitory learning as well as how it explains the extinction phenomenon in EC are discussed.

A Brief Mobile Evaluative Conditioning App to Reduce Body Dissatisfaction? A Pilot Study in University Women.

ObjectiveBody dissatisfaction is a major risk factor underlying vulnerability to eating disorders. Experimental studies conducted in controlled environments suggest that body dissatisfaction could be improved by using evaluative conditioning (EC). The present study evaluates the feasibility of using an EC app in everyday life and the effects of its use on body dissatisfaction.MethodWe designed a game-like app inspired by the Therapeutic EC app. 60 participants were randomly assigned to two conditions. Participants in the EC condition had to pair photographs of their own body with positive photographs, while participants in the neutral condition had to pair photographs of their own body with neutral photographs. We tested the effect of use of the app on body dissatisfaction, drive for thinness, self-esteem, depressive symptoms and eating behaviors.ResultsAnalysis revealed that participants in all conditions presented a significant decrease in body dissatisfaction, drive for thinness and an increase in self-esteem. However, contrary to our hypothesis, these effects were no greater in the EC condition than in the neutral condition.ConclusionThis is the first study to evaluate the effects of an app-based EC intervention targeting body image. Results appear to be promising and the app could easily be implemented in an ecological setting as it is a low effort, attractive and accessible intervention. However, the findings question the idea that EC was responsible for the observed effects which could be explained by the exposure effect. Results are discussed.

Is there evidence for unaware evaluative conditioning in a valence contingency learning task?

ABSTRACTIn three experiments we investigated whether memory-independent evaluative conditioning (EC) and other memory-independent contingency learning (CL) effects occur in the valence contingency task (VCT). In the VCT, participants respond to the valence of a target word that is preceded by a nonword. Across trials, each nonword is mostly combined with either positive or negative targets. Schmidt and De Houwer (2012. Contingency learning with evaluative stimuli. Experimental Psychology, 59, 175–182. doi:10.1027/1618-3169/a000141) showed faster and more often correct responses on trials that conformed to this contingency. Additionally, the authors found EC on valence ratings assessed after the VCT. All effects occurred also in the absence of contingency memory. Our Experiments 1a and 1b replicated the CL effects on measures assessed during the VCT (RT, errors) and showed that they occurred in the absence of contingency memory, but they did not replicate the EC effect assessed after the VCT. In Experiment 2, we tested whether this dissociation between EC and other CL effects was due to the different phases (during vs. after VCT) with a CL measure that could be used in both phases. On this measure, the CL effect was memory-dependent after, but not during the VCT. Across measures and experiments, we thus find memory-independent CL during the VCT, but not afterwards.

On the external validity of evaluative conditioning: Evaluative responses generalize to modified instances of conditioned stimuli

Evaluative conditioning (EC) is a social-cognitive research paradigm that is claimed to serve as an experimental analogue for the acquisition of attitudes towards individuals and groups. Previous research has challenged this claim by showing that the EC effect in facial stimuli is disrupted when a single feature of a face is altered. As the external validity of research paradigms is vital when generalizing findings from an experiment to the social world, the present research reconsiders this previous work in three experiments. Using faces as conditioned stimuli, we demonstrate that neither changes in viewing angle (Experiments 1 and 2), nor changes in features of the conditioned face (Experiment 3) disrupt the EC effect. The present experiments thus demonstrate that attitude acquisition by means of EC procedures generalizes to novel instances of the conditioned stimulus, signifying the adaptive value of EC effects in preparing behavior. Moreover, the present work suggests that conclusions drawn from this research paradigm can be applied to the acquisition of social attitudes.

Reducing body dissatisfaction by means of an evaluative conditioning procedure in undergraduate women: A replication study

The aim was to investigate whether a computer-based evaluative conditioning (EC) procedure using positive social feedback is effective in enhancing body satisfaction. Prior findings in three small-scale studies were mixed showing positive effects in pre-clinical samples, but not in a clinical sample of eating disorder patients. Therefore, our main goal was to replicate the original finding of Martijn et al. (2010) in a well-powered unselected sample of 129 female undergraduates. We assessed the impact of EC on questionnaire measures of body satisfaction as well as on affective ratings of the participants' body pictures used in the task to verify whether the EC procedure was effective in heightening the subjective valence of these pictures. Supporting the validity of the current EC procedure, participants in the experimental condition rated their own pictures after the training as more positive than participants in the control condition. However, this effect of the EC procedure did not transfer to the self-report indices of body satisfaction. In addition, women with relatively high body concern did not profit more from the EC procedure than women with relatively low body concern. Together, these findings suggest that the EC procedure in its present form is not ready for use as an intervention for improving body satisfaction. However, it seems worthwhile to investigate in future studies how the EC procedure can be further strengthened in a way that effects on stimulus ratings eventually also ‘spill over’ to the level of self-reported body satisfaction.

Godless by association: Deficits in trust mediate antiatheist stigma-by-association.

In the United States, atheists elicit high levels of sociopolitical rejection that is primarily motivated by a lack of trust. Across three studies, we use evaluative conditioning (EC) as a theoretical framework to evaluate whether these deficits extended to candidates who are not atheists themselves but merely perceived to be associated with atheism. Study 1 found that implicit trust, explicit trust, and voting intentions toward target candidates were all negatively impacted by an EC procedure that paired a candidate's face with words related to atheism. Study 2 found that trust and political support for a Christian candidate was eroded when he expressed proatheist public policy position. In both experiments, trust mediated the effects of atheist associations on voting intentions for religiously affiliated participants. Study 3 found the same moderated-mediation pattern. Religiously affiliated participants who perceived Barack Obama as being more favorable toward atheists were less likely to vote for him, in large part due to a lack of trust. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Are there two independent evaluative conditioning effects in relational paradigms? Dissociating the effects of CS-US pairings and their meaning

ABSTRACTRecent research into evaluative conditioning (EC) shows that information about the relationship between the conditioned and unconditioned stimuli can exert strong effects on the size and direction of the EC effect. Additionally, the co-occurrence of these stimuli seems to exert an orthogonal effect on evaluations. This finding has been interpreted as support for two independent types of EC effects. However, previous research devoted to this question relied on aggregated evaluative measures, allowing for alternative interpretations. In four experiments, we developed and validated a multinomial processing tree model that distinguishes effects of the pairings from effects of the meaning of the pairings. Our findings suggest that two independent EC effects contribute to overall evaluative change in a relational EC paradigm. The model that we developed offers a helpful method for future research in that it allows for an assessment of the effects of manipulations on processes rather than overall performance on an evaluative measure.

Of two minds about alcohol: Specific effects of evaluative conditioning on implicit, but not explicit, alcohol cognitions among heavy versus light drinkers.

Heavy episodic drinking (HED) is a dangerous and pervasive problem in college populations. Two experiments examined the asymmetric effects of evaluative conditioning (EC) on cognitions underlying HED in a nonclinical, student sample. Based on the associative-propositional evaluation (APE) model, we predicted that negative EC would result in stronger implicit alcohol avoidance motivation compared to neutral EC but would not impact explicit alcohol expectancies; further, we hypothesized stronger negative EC effects among students reporting HED compared to light drinkers. Experiment 1 supported these hypotheses. In Experiment 2, participants were required to focus on either feelings or knowledge about alcohol following EC. Replicating Experiment 1, negative EC was effective in promoting implicit alcohol avoidance motivation among students reporting HED compared to neutral EC, whereas no differences in explicit alcohol expectations or urges emerged. However, greater implicit alcohol avoidance predicted lower explicit alcohol urges among participants instructed to focus on alcohol-related feelings, but not alcohol-related knowledge, regardless of condition. Findings suggest students reporting HED, but not light drinkers, may exhibit implicit alcohol avoidance following negative EC and that instructions to focus on alcohol-related feelings may align explicit and implicit responses. Results have implications for interventions aimed at retraining implicit alcohol cognitions among college students. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

A memory-based judgment account of expectancy-liking dissociations in evaluative conditioning.

Evaluative conditioning (EC) is a change in liking of neutral conditioned stimuli (CS) following pairings with positive or negative stimuli (unconditioned stimulus, US). A dissociation has been reported between US expectancy and CS evaluation in extinction learning: When CSs are presented alone subsequent to CS-US pairings, participants cease to expect USs but continue to exhibit EC effects. This dissociation is typically interpreted as demonstration that EC is resistant to extinction, and consequently, that EC is driven by a distinct learning process. We tested whether expectancy-liking dissociations are instead caused by different judgment strategies afforded by the dependent measures: CS evaluations are by default integrative judgments-summaries of large portions of the learning history-whereas US expectancy reflects momentary judgments that focus on recent events. In a counterconditioning and two extinction experiments, we eliminated the expectancy-liking dissociation by inducing nondefault momentary evaluative judgments, and demonstrated a reversed dissociation when we additionally induced nondefault integrative expectancy judgments. Our findings corroborated a priori predictions derived from the formal memory model MINERVA 2. Hence, dissociations between US expectancy and CS evaluation are consistent with a single-process learning model; they reflect different summaries of the learning history. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

I didn’t feel like drinking, but I guess why: Evaluative conditioning changes on explicit attitudes toward alcohol and healthy foods depends on contingency awareness

Background and objectivesAddictive behaviors are influenced both by impulsive processes headed toward consumption, and by higher-order, reflective, control-oriented processes. Our objective here was to (i) change automatically-activated action tendencies and explicit attitudes toward alcohol and softdrinks, as well as fat and healthy food through evaluative conditioning (EC) and (ii) investigate the role of contingency awareness in producing an EC effect. MethodsIn the EC conditions, alcohol-related stimuli or fat foods (CS) were associated with negative pictures (US), while stimuli related to softdrinks or healthy foods (CS) were associated with positive pictures (US). In the control conditions, CSs were paired with neutral pictures (US). Measures of explicit attitudes and approach tendencies (AAT) were assessed before and after the EC procedure. Participants (n = 95) then indicated whether they remembered, for each CS, the valence of the associated US. ResultsSignificant EC effects were found on explicit attitudes toward alcohol and marginally significant change on attitudes toward fat foods. The effect on alcohol appeared to depend on awareness of CS-US contingencies. No effects of EC were found on approach tendencies. LimitationsDifficulties to find EC effects on action tendencies can be attributed to structural features of the AAT and strategies during EC. ConclusionsWe conclude that EC alone may not be efficient in reducing addictive behaviors in populations with reduced capacity to process CS-US pairs and for which impulsive behaviors are strong predictors of consumption.

The influence of misinformation manipulations on evaluative conditioning

We tested the influence of misinformation on evaluative conditioning (EC) by giving false information about the contingencies between CS and US stimuli after a conditioning procedure. This was done by asking participants questions about the USs while inaccurately suggesting that some CSs had been paired with a US that had the opposite valence than the US it had actually been paired with. For CS-US pairs from other conditions, accurate suggestions or no suggestions at all were given to participants. This manipulation significantly moderated EC effects. For pairs that were combined with inaccurate information we found a reversed EC effect, while we found a standard EC effect for both pairs combined with no suggestions and pairs combined with accurate suggestions. Additional analyses showed that the misinformation manipulation also moderated memory for the pairs. These results show that misinformation manipulations cannot only influence explicit memory but also attitudes. Furthermore, and in line with some theories of EC, they support the relevance of explicit memory for EC effects.

An action control perspective of evaluative conditioning

ABSTRACTAttitudes are at the core of many topical issues, and a meeting point for research and discussion. This pervasiveness is not surprising given an attitude’s utility in reducing the complexity of the environment into relatively simple likes or dislikes of stimuli. How attitudes are formed is usually addressed by means of evaluative conditioning (EC). EC has been addressed from a traditional cognitive and a functional account. In this article, we present a different perspective on EC, which is situated in action control research. This perspective tries to take advantage of the strengths of both existing EC accounts by focusing on those cognitive processes that enjoy high levels of experimental control and that are necessary to explain how stimuli find their way into mental processing and ultimately into an evaluative response. Implications of this action control based account for EC research in specific and for attitude research in general are discussed.

In the eye of the drinker: Drinking motives influence the effectiveness of conditioning implicit alcohol attitudes

Risky alcohol use is prevalent among college students. Pre-intervention research has established methods of influencing alcohol cognition and reducing short-term alcohol consumption among students using evaluative conditioning (EC), repeatedly pairing alcohol with emotionally valenced images. Specifically, negative EC promotes negative attitudes toward alcohol, but additional research is needed to understand the range of EC effects and conditions under which it is or is not effective. For example, whether pairing alcohol with positive images promotes positive alcohol attitudes has not been tested. Further, drinking motives may influence the effectiveness of conditioning alcohol attitudes, since these motives are strongly associated with emotional stimuli like those presented in EC. The current experiment tested the interaction of drinking motives (coping and enhancement) and EC valence (negative or positive) on implicit alcohol avoidance. Participants (N = 95) were undergraduate students reporting active alcohol use. Results indicated no main effect of EC condition on implicit alcohol avoidance. However, drinking motives interacted with EC procedures assigned to participants. Those reporting greater coping motives exhibited less implicit alcohol avoidance following negative EC, whereas those reporting greater enhancement motives exhibited less alcohol avoidance following positive EC. Findings indicate drinking motives may influence the effectiveness of EC for altering alcohol attitudes. Negative EC did not promote alcohol avoidance among college students reporting higher coping motives, and positive EC only reduced avoidance among students reporting higher enhancement motives. These results indicate drinking motives interact with situational cues to impact both positive and negative responses to alcohol.

Response production during extinction training is not sufficient for extinction of evaluative conditioning

ABSTRACTTwo high-powered experiments examined the role of evaluative response production in the extinction of evaluative conditioning (EC) by positioning EC in the procedural and conceptual framework of classical conditioning (CC). According to Rescorla's response inhibition hypothesis, more frequent responding during extinction training results in larger extinction during testing. Experiment 1 used three extinction conditions following response acquisition in an EC procedure: evaluative responses were measured only after extinction; after acquisition and after extinction; or were continuously measured after acquisition, during extinction and after extinction. Based on Rescorla's response inhibition hypothesis, we predicted that extinction of EC would be the highest in the third condition. Experiment 2 was aimed at further facilitating extinction of EC by encouraging participants to experience that their evaluation may change over the course of the experiment. To this end, half of the participants completed pre- and post-acquisition ratings prior to practicing continuous response expression in the extinction phase. Contrary to our predictions, no extinction of EC was observed in either of these experiments. We conclude that Rescorla's inhibition response hypothesis may not apply to EC and discuss the theoretical implications of this finding.

No evaluative conditioning effects with briefly presented stimuli.

Evaluative conditioning (EC) changes the preference towards a formerly neutral stimulus (conditioned stimulus; CS), by pairing it with a valent stimulus (unconditioned stimulus; US), in the direction of the valence of the US. When the CS is presented suboptimally (i.e., too briefly to be consciously perceived), contingency awareness between CS and US can be ruled out. Hence, EC effects with suboptimally presented CSs would support theories claiming that contingency awareness is not necessary for EC effects to occur. Recent studies reported the absence of EC with briefly presented CSs when both CS and US were presented in the visual modality, even though the CSs were identified at above-chance levels. Challenging this finding, Heycke et al. (R Soc Open Sci 4(9):160935, 2017) found some evidence for an EC effect with briefly presented visual stimuli in a cross-modal paradigm with auditory USs, but that study did not assess CS visibility. The present study realized a close replication of this study, while deviated from it using different stimuli, introducing a brief practice phase, and adding a CS visibility check. Overall EC for briefly presented stimuli was absent, and results from the visibility check show that an EC effect with briefly presented CSs was only found, when the CSs were identified at above-chance levels.

“Paint It Black”

Abstract. The present study is a first attempt to link self-reported difficulties in everyday emotion regulation (ER) with evaluative conditioning (EC). We conducted a within-subject study in which participants (n = 90) filled the Difficulties in Emotion Regulation Scale (DERS) and were exposed to neutral conditioned stimulus (CS) paired with mildly or highly arousing negative unconditioned stimuli (USs) and positive USs. Participants then filled a contingency awareness measure. Results showed (i) that CSs paired with highly arousing negative USs were more negatively evaluated, (ii) that the EC effect with highly and mildly arousing negative USs was stronger among participants with greater self-reported difficulties in everyday ER. Moreover, participants were more likely to be aware of the CS-US contingencies with highly (vs. mildly) arousing negative USs. Implications for the understanding of maladaptive behaviors and for future directions in EC research are discussed.

Does evaluative conditioning depend on awareness? Evidence from a continuous flash suppression paradigm.

The role of awareness in evaluative learning has been thoroughly investigated with a variety of theoretical and methodological approaches. We investigated evaluative conditioning (EC) without awareness with an approach that conceptually provides optimal conditions for unaware learning - the Continuous Flash Suppression paradigm (CFS). In CFS, a stimulus presented to one eye can be rendered invisible for a prolonged duration by presenting a high-contrast dynamic pattern to the other eye. The suppressed stimulus is nevertheless processed. First, Experiment 1 established EC effects in a pseudo-CFS setup without suppression. Experiment 2 then employed CFS to suppress conditioned stimuli (CSs) from awareness while the unconditioned stimuli (USs) were visible. While Experiment 1 and 2 used a between-participants manipulation of CS suppression, Experiments 3 and 4 both manipulated suppression within participants. We observed EC effects when CSs were not suppressed, but found no EC effects when the CS was suppressed from awareness. We relate our finding to previous research and discuss theoretical implications for EC. (PsycINFO Database Record (c) 2018 APA, all rights reserved).