Contamination Disgust Research Articles

Fear of Fat Moderates the Association between Contamination Disgust and Eating Concerns

Introduction: Certain forms of disgust, specifically contamination disgust, may represent risk factors for eating psychopathology such as eating concerns (e.g., cognitive distress/worries surrounding eating). Furthermore, anti-fat attitudes, specifically fear of fat, may increase risk for eating concerns. However, research has yet to investigate these risk factors together despite notable associations between these constructs and eating concerns. Therefore, this study examined associations between contamination disgust and eating concerns, with fear of fat moderating these associations. Furthermore, these associations were examined with other eating psychopathology outcomes to investigate if theoretical relationships between focal predictors would generalize to other forms of eating psychopathology. Methods: Participants were 173 females (Mage = 18.9; SD = 1.00; Range = 18-23) from a Midwestern university in the United States. Analyses examined associations of contamination disgust, fear of fat, and their interaction with eating disorder symptoms. Results: Simple slopes revealed that contamination disgust was not significantly associated with eating concerns at low fear of fat. However, at high fear of fat, contamination disgust was significantly positively associated with eating concerns. These interactions were not significant when predicting shape concerns, weight concerns, or restraint. Discussion: Results suggest that contamination disgust and fear of fat may be risk factors for eating concerns and that these variables should potentially be modeled in tandem. Screening for fear of fat among clients likely to report high levels of contamination disgust may provide indirect information on these clients’ comorbid eating concerns. Future research should examine if current associations generalize to other populations outside of college-aged women.

Disease-related disgust promotes antibody release in human saliva

The behavioral immune system (BIS) comprises manifold mechanisms, that may assist the physiological immune system (PIS) in counteracting infection and can even reduce the risk of contagion. Previous studies have found initial evidence for possible interactions between the two systems. However, most of these findings were correlative and have not been replicated. Further, none of these studies examined whether disease stimuli that indicate an enhanced airborne transmission risk may trigger a different immune response in comparison to stimuli that predominantly evoke core disgust. In the present study, we employed a video-priming approach to get further insight in the influence of the perception of disgust- and disease-related stimuli on the rapid physiological immune response, as indicated by changes of secretory immunoglobulin A (S-IgA) in saliva. We created three video primers that represented different categories of disgust- and/or disease-associated content. Two of the videos showed disease-related situations that were associated with contagious respiratory virus infections, varying in concealment of aerosols. The third video incurred no heightened airborne contagion risk, but comprised situations that are known to elicit core disgust, such as rotten foods, decaying animal carcasses, or cockroaches. A fourth video acted as control showing landscape impressions. The different video primers varied in their contagion risk and disgust-evoking potential. Given the role of S-IgA in the mucosal immune defense, we expected differences in the S-IgA response between the two videos indicating a heightened airborne contagion risk and the core disgust video, with the highest S-IgA to occur after the aerosol video. For this, we used the data of 107 healthy participants in a between-subjects design with the four video primers. We found a significant increase of S-IgA in response to both the disease- and the disgust-related videos, which correlated positively with the perceived contagion risk of the displayed situations. Nevertheless, there was no significant difference in the increase between the three disease- and disgust-related videos. We also found that people with a high contamination disgust produced less S-IgA in such situations, which is a hint for a compensating relationship between the BIS and PIS. Our observations suggest that the mere visual perception of videos showing realistic situations of an increased contagion risk can elicit a heightened release of salivary antibodies.

The effect of contamination disgust on Covid-19-related anxiety

IntroductionIt is proven that high levels of disgust contribute to implementing protective behaviors. Investigators also discovered that the emotion of disgust plays a central role in determining anxiety related to the contraction of COVID-19. Few data are available about the role of the contamination disgust, a specific disgust domain, in this relationship.ObjectivesThe effect of contamination disgust on COVID-19-related anxiety was investigated.Methods 295 healthy subjects were enrolled through an online survey. They completed Disgust Scale-Revised (DS-R) and were asked to estimate their levels of Covid-19-related anxiety in 12 proposed situations. A total score was then calculated. An ANOVA model having Covid-19-related anxiety total score as dependent variable, and DS-R contamination disgust, age, and sex as predictors was estimated.ResultsThe overall model was significant (F(3,291)=6.402, p<0.001) and explained 6.2% of total Covid-19 anxiety variance (R2=0.062). The effect of DS-R contamination disgust on Covid-19-related anxiety was positive, significant (B=0.974, t(291)=3.227, p=0.001) and explained 3.5% of Covid-19-related anxiety variance (partial η2=0.035). A significant effect of sex was detected (F(1,291)=4.919, p=0.027), with females having higher Covid-19-related anxiety than males, while no effect was detected for age (B=-0.024, t(291)=-0.884, p=0.377).ConclusionsThe presented data provide preliminary evidence for an effect of contamination disgust on Covid-19-related anxiety.DisclosureNo significant relationships.

Disgust sensitivity is negatively associated with immune system activity in early pregnancy: Direct support for the Compensatory Prophylaxis Hypothesis

According to the Compensatory Prophylaxis Hypothesis (CPH), disgust may be considered a part of the behavioral immune system, adjusting as a function of immunocompetence. Early pregnancy involves modulation of a complex network of various immune-related factors, but only a few studies so far have focused on disgust sensitivity in pregnant women in the context of the CPH. This study aimed to examine associations between disgust sensitivity and immune activity indices, cytokine levels, and white blood cell (WBC) count in pregnant women. The sample included 78 women in the 1st trimester of pregnancy. Higher disgust sensitivity (Disgust Scale-Revised; DS-R) was significantly associated with decreased levels of IL-1β, IL-2 IL-4, IL-7, IL-17, Eotaxin, MCP-1 (MCAF), and RANTES in blood serum. This model explained 17.5% of the total DS-R score variability. Using the DS-R subscales, the Contamination disgust was significantly associated with levels of FGF basic, IFN-γ, IL-1β, IL-2, IL-4, IL-7, IL-17A, G-CSF, MCP-1 (MCAF), MIP-1α, PDGF-BB, and RANTES, and the Core disgust was significantly associated with levels of IL-1β, IL-2, IL-4, IL-7, IL-17A, Eotaxin, G-CSF, IP-10, MCP-1 (MCAF), PDGF-BB, and TNF-α. Disgust sensitivity was not associated with WBC count. Disgust may reflect and compensate for insufficient immune adaptation in early pregnancy, suggesting the potential clinical significance of this common prenatal symptom.

The transdiagnostic nature of disgust propensity: An examination of its associations with anxiety and obsessive compulsive-related disorder symptoms

Significant research highlights the role of disgust propensity in obsessive-compulsive disorder (OCD) and other anxiety-based diagnoses and suggests that heightened disgust propensity may be a transdiagnostic risk factor for these disorders. However, OCD was reclassified from an anxiety to an obsessive-compulsive and related disorder (OCRD), due in part to OCD being associated with a range of non-anxiety affective experiences, including disgust. A fair amount of work has examined the relationship between disgust, OCD, and anxiety disorders; less information is available on its relation to the OCRDs. The present study examined associations between specific domains of disgust propensity and self-reported symptoms of several anxiety disorders, OCD, body dysmorphic disorder (BDD), and hoarding in two non-clinical samples. Results showed that specific phobia, OCD, and BDD symptoms were consistently and strongly correlated with disgust domains. Results of multivariate regression analyses indicated replicable relationships between animal-reminder disgust and specific phobia symptoms, core disgust and animal phobia symptoms, and contamination disgust and cleaning symptoms, controlling for negative affect, anxiety sensitivity, and experiential avoidance. Results were inconsistent for panic, BDD, and hoarding symptoms. These results partially support the argument that the OCRDs are more distinct than similar and that OCD and some anxiety disorders are defined by common psychological processes.

Transdiagnostic effect of contamination disgust on asceticism

IntroductionThere is a growing literature suggesting disgust plays a major role in religiosity. Asceticism is a personality trait characterized by abstinence from sensual pleasures, often for the purpose of pursuing spiritual goals. Since few studies suggested that higher disgust levels may lead to greater fear of sin, contamination disgust may serve as effective mechanisms for inflated scrupulosity.ObjectivesWe aimed to investigate the role of contamination disgust on a specific religious belief in two clinical groups: eating disorders and anxiety disorders.MethodsWe enrolled 84 patients admitted in the Psychiatric Unit of Careggi with diagnosis of Anxiety Disorders (AD) and Eating Disorders (ED). We administered them: Disgust Scale Revised (DS-R) and Eating Disorders Inventory 2 (EDI-2)ResultsA t-test for independent samples between AD patients and ED patients showed no difference in DS-R contamination disgust subscale (t=1.437, p=0.153), while significantly higher EDI-2 asceticism scores were detected in ED patients (t=2.452, p=0.010). An ANCOVA model having EDI2 Asceticism subscale as dependent variable, and DS contamination disgust subscale, diagnosis, and interaction between contamination disgust and diagnosis was estimated. The overall model was significant (F(1,136)=4.854, p=0.003) and accounted for 9.7% of variance of EDI2 Asceticism subscale (R2=0.097). The effect of contamination disgust was positive and significant (β=0.302, t=2.781, p=0.006), and accounted for 5.4% of variance of EDI2 Asceticism (partial η2=0.054). No effect was detected for diagnosis (F(1,136)=0.012, p=0.912) or interaction between contamination disgust and diagnosis (F(1,136)=1.346, p=0.248).ConclusionsContamination disgust may have a trans-diagnostic effect on asceticism and may be a possible driver for specific religious behaviors.DisclosureNo significant relationships.

The Emotion of Disgust among Medical and Psychology Students.

The emotion of disgust evolved as a way to protect oneself from illness and is associated with aspects of disease avoidance. Disgust Scale–Revised (DS-R) (Olatunji et al., 2008) measures the disgust propensity of three kinds of disgust (core, animal reminder, contamination). Contextual factors, such as academic background, might influence DS-R scoring, especially among medical students, where the notion of disease is central. We examined DS-R scoring and the choice of postgraduate studies in medical (n = 94) and psychology (n = 97) students. In an anonymous web-based survey, participants completed the DS-R and a questionnaire including plans for postgraduate studies. Females outnumbered males and scored higher in total DS-R score (p = 0.003). Psychology students scored higher in all three kinds of disgust (p < 0.001 for core disgust and animal reminder, p = 0.069 for contamination disgust), indicating a higher level of disease avoidance. Medical students willing to follow Internal Medicine scored higher in core disgust (p < 0.05), while psychology students willing to study Experimental Psychology scored lower in the animal reminder subscale (p = 0.019 and p < 0.001 for the association between these subscales and the orientation of Medical and Psychology Students, respectively). In conclusion, disgust propensity as rated by DS-R is related to academic background and orientation preferences in postgraduate studies.

Disgust sensitivity and kosher food preferences among the non-Jewish population in the US

About $200 billion of kosher-certified foods are purchased each year in the US, and companies can pay up to $100,000 to private agencies to certify that their products meet kosher standards. Although kosher certification is ostensibly for the purpose of Jewish religious observance, the vast majority of people who buy kosher food are not Jewish. In this study, we examine the psychological drivers of these purchases among people who are not Jewish. Our study found that people with high levels of contamination disgust sensitivity were more likely to prefer kosher food, which is often marketed in a manner that implies that it has fewer contaminants. The effect of contamination disgust sensitivity on preference for kosher food was partially mediated by perceptions that kosher food rated highly on dimensions related to oral disgust (food rejection) rather than on dimensions related to moral disgust. Moderated mediation was significant for the factor of subjective knowledge, such that the mediation effect only occurred among participants who reported high levels of knowledge about kosher food. Strength of religious affiliation was a marginally significant covariate, as people who reported high levels of affiliation with organized religion had a greater preference for kosher food.

Factor structure, reliability, and validity of the Japanese version of the Disgust Scale-Revised (DS-R-J)

The purpose of this study was to develop the Japanese version of the Disgust Scale-Revised (DS-R-J). The participants were 1063 Japanese people (mean age = 21.64, SD = 7.33, range = 18–77; 581 males and 482 females) and were separated into three different groups. Participants in samples 1 (n = 481) and 2 (n = 492) provided data for examining the factor structure and validity of the DS-R-J. They completed the DS-R-J as well as questionnaires assessing disgust propensity and sensitivity, anxiety sensitivity, state and trait anxiety, affective state, and obsessive-compulsive symptoms. Participants in sample 3 (n = 90) provided data for estimating the test–retest reliability of the DS-R-J. The exploratory and confirmatory factor analyses confirmed the three-factor structure involving core disgust, animal-reminder disgust, and physical and mental contamination disgust. Internal consistency and test–retest reliability were sufficient, and conceptual validity of the DS-R-J was also supported. The results show that the Japanese version of the DS-R-J is a reliable and valid measurement of disgust sensitivity.

The Effect of Germ Movement on the Construal of Mental States in Germs: The Moderating Role of Contamination Fear

In two studies, we examined a novel relationship between movement and anthropomorphism—the attribution of human characteristics to nonhuman agents—in relation to germs. Furthermore, we examined whether individual differences in contamination fear and disgust proneness moderated the effect of movement on the tendency to anthropomorphize germs. Following an initial study that demonstrated associations between imagined germ movement, contamination fear, and the attribution of malevolent intentions to germs, we conducted a second study that experimentally manipulated germ movement with a brief film clip of magnified germs. The results of the second study showed that the experimental manipulation of germ movement increased attributions of malevolent intentions to germs and enhanced the tendencies of individuals with higher levels of contamination fear to attribute some general human characteristics to germs (i.e., intentions, feelings). These findings suggest that the attribution of malevolent intentions to germs may be a cognitive distortion that contributes to the maintenance of contamination fear, which may afford a novel treatment target. Perceived movement may serve as an antecedent to the attribution of malevolent intentions to germs and thus exacerbate the tendency to make these attributions.

The Behavioral Immune System and Attitudes About Vaccines

The present research utilized evolutionary theory to examine the relation between the behavioral immune system (i.e., disgust sensitivity) and attitudes about vaccines. The findings from the studies suggest that higher levels of dispositional disgust sensitivity is predictive of more negative attitudes toward vaccines. These findings are consistent with several recent publications and thus have broad implications for public health research associated with vaccines. In Study 1, participants reporting higher dispositional disgust sensitivity (specifically, contamination disgust) tended to report more negative attitudes about vaccines. Study 2 replicated this result in a nonstudent sample using additional measures of disgust sensitivity more closely associated with aversion to perceived sources of contamination. Study 2 also revealed that beliefs about the likelihood of contracting illness in the future were unrelated to vaccine attitudes. Implications for the observed relation between intuitive aversion to contamination and vaccine attitudes are discussed.

Cardiovascular regulation pattern of contamination-related disgust: Consistency and context dependence.

The cardiovascular response to contamination-related disgust was proposed to be under parasympathetic or parasympathetic-sympathetic cardiac control. However, findings of physiological disgust responses are inconsistent, possibly due to effects of the emotion induction context and single cardiovascular changes being part of larger cardiovascular regulation patterns. Therefore, we induced an emotionally neutral state and core and contamination disgust in female participants in two induction contexts (auditory script, film clip). Dependent variables were emotion self-reports and 10 cardiovascular factors derived from 23 cardiovascular variables. We found elevated disgust ratings in both induction contexts. On the cardiovascular level, we observed consistent increases in a factor indicating vagal cardiac control in both contexts and changes in factors indicating sympathetic activation that were bound to the respective context. These findings support the notion of a parasympathetic dominance of the contamination-related disgust response and underpin the importance of incorporating the induction context in the study of cardiovascular responses to disgust.

The progesterone level, leukocyte count and disgust sensitivity across the menstrual cycle

According to the compensatory prophylaxis hypothesis, women in the luteal phase, characterized by a high progesterone level, which suppresses various mechanisms of immune response, should exhibit higher disgust sensitivity, compared to the follicular phase. In this study we test the hypothesis on the compensatory role of disgust sensitivity at the luteal phase of the menstrual cycle, when immune functions are expected to change due to a rise in progesterone level.Disgust sensitivity, progesterone level (P) and white blood cell count (WBC), a general marker of immunocompetence, were measured in 30 healthy women of reproductive age. Disgust sensitivity was evaluated with: 1) Disgust Scale Revised (DS-R) containing three subscales: Core Disgust, Animal Reminder and Contamination Disgust, 2) Pathogen Disgust and Moral Disgust domains of the Three-Domain Disgust Scale. Measurements were conducted twice - in menstruation (the lowest P) and in the mid-luteal phase (the highest P). The results were analyzed longitudinally and using cross-sectional comparisons.Progesterone level, WBC count, and the level of disgust sensitivity in Animal Domain were higher in the mid-luteal phase comparing to menstruation. The level of disgust sensitivity (DS-R score, Animal, Contamination, Pathogen Disgust) correlated only with P (not WBC) and only in the mid-luteal phase (not in menstruation) in between-subjects comparisons.On the base of these results, we hypothesize that the level of disgust sensitivity in the whole menstrual cycle of a woman is “adjusted” to the luteal phase with the highest P level i.e. when immunosuppression is the greatest.

Becoming an insectivore: Results of an experiment

In many parts of the world, people consume insects due to their nutritive value and low environmental production costs. However, Western societies rarely experience insects as a food source. To overcome initial resistance, researchers have suggested introducing insects into the market in a processed form so that those characteristics which are repellent to Western consumers are no longer readily visible. Thus far, the success of this strategy is untested. For the present experiment, we used two kinds of tortilla chips. One was made with a traditional corn flour recipe, while the other included cricket flour as an ingredient. People from the general population (N=104) were randomly assigned to consume either the traditional chips (control condition) or the cricket chips (experimental condition). After answering questions related to their eating behaviours, the participants tasted the chips. Both groups were informed prior to the tasting what kind of chips they would be sampling. After the tasting, the participants were questioned again to assess their willingness to eat unprocessed insects. Multiple linear regression showed that the experimental condition (β=.16) had a significant effect on willingness to eat unprocessed insects, while simultaneously controlling for the impact of previous insect consumption (β=.36), food neophobia (β=−.33) and animal-based food contamination disgust (β=−.17). People in the experimental condition reported a higher willingness to eat unprocessed insects than people in the control condition. The present experiment showed that exposure to processed insect products can increase consumers’ willingness to consume unprocessed insects.

Does cognitive flexibility moderate the relationship between disgust sensitivity and contamination fear?

High disgust sensitivity and poor cognitive flexibility have been independently identified as contributing factors in the aetiology of obsessive-compulsive disorder. This study looks at the relationship between contamination fear and disgust sensitivity in a non-clinical population. In particular, at whether two moderating factors, cognitive flexibility and emotional reappraisal, have a buffering influence. One hundred participants from an undergraduate population completed a battery of questionnaires which rated their disgust and level of contamination fear. They also completed a set-shifting task to assess cognitive flexibility and an emotion regulation questionnaire. The mean age of the sample was 21.4 years with 62% of the sample population being female. SPSS 16 was used to correlate the main variables using Pearson's correlation and moderated regression, using MODPROBE, was used for analysis. Results confirmed previous findings that high disgust sensitivity is significantly associated with contamination fear (P &lt; 0.01). In addition to this, both cognitive flexibility and emotional reappraisal reduced the influence that disgust has on an individual's contamination fear. Cognitive flexibility and emotion reappraisal were not found to be significantly correlated to each other (P = 0.511), which suggest that these variables moderate the relationship between disgust and contamination fear independently of each other. Individuals with poor cognitive flexibility and/or poor emotional reappraisal were found to have high levels of contamination fear, which suggests that these two variables may attenuate the relationship between disgust and contamination fear. Future implications of these findings have been discussed although further research is needed to confirm these conclusions in a clinical population.Disclosure of interestThe author has not supplied his/her declaration of competing interest.

Selective effects of excessive engagement in health-related behaviours on disgust propensity

The present study examined the extent to which engagement in health-related behaviours modulate disgust propensity, a purportedly stable personality trait. Participants were randomised into a health behaviour (n = 30) or control condition (n = 30). After a baseline period, participants in the health behaviour condition spent one week actively engaging in a clinically representative array of health-related behaviours on a daily basis, followed by a second week-long baseline period. Participants in the control condition monitored their normal use of health behaviours. Compared to control participants, those in the health behaviour condition reported significantly greater increases in disgust propensity after the health behaviour manipulation. This effect was most robust for contamination disgust propensity and remained significant when controlling for changes in health anxiety and disease fear. In contrast, self-disgust and anxiety sensitivity did not significantly differ between the two groups as a function of the health behaviour manipulation. Mediational analyses were consistent with the hypothesis that changes in the frequency of health-related behaviours, but not changes in health anxiety and disease fear, mediated the effects of the experimental manipulation on changes in contamination disgust propensity. These findings suggest that the purportedly stable personality trait of disgust propensity can be modulated by excessive engagement in health-related behaviours.

Disgust sensitivity selectively predicts attitudes toward groups that threaten (or uphold) traditional sexual morality

Previous research has linked disgust sensitivity to negative attitudes toward gays and lesbians. We extend this existing research by examining the extent to which disgust sensitivity predicts attitudes more generally toward groups that threaten or uphold traditional sexual morality. In a sample of American adults (N=236), disgust sensitivity (and particularly contamination disgust) predicted negative attitudes toward groups that threaten traditional sexual morality (e.g., pro-choice activists), and positive attitudes toward groups that uphold traditional sexual morality (e.g., Evangelical Christians). Further, disgust sensitivity was a weaker predictor of attitudes toward left-aligned and right-aligned groups whose objectives are unrelated to traditional sexual morality (e.g., gun-control/gun-rights activists). Together, these findings are consistent with a sexual conservatism account for understanding the relationship between disgust sensitivity and intergroup attitudes.

Specificity of Disgust Domains in the Prediction of Contamination Anxiety and Avoidance: A Multimodal Examination

Although core, animal-reminder, and contamination disgust are viewed as distinct “types” of disgust vulnerabilities, the extent to which individual differences in the three disgust domains uniquely predict contamination-related anxiety and avoidance remains unclear. Three studies were conducted to fill this important gap in the literature. Study 1 was conducted to first determine if the three types of disgust could be replicated in a larger and more heterogeneous sample. Confirmatory factor analysis revealed that a bifactor model consisting of a “general disgust” dimension and the three distinct disgust dimensions yielded a better fit than a one-factor model. Structural equation modeling in Study 2 showed that while latent core, animal-reminder, and contamination disgust factors each uniquely predicted a latent “contamination anxiety” factor above and beyond general disgust, only animal-reminder uniquely predicted a latent “non-contamination anxiety” factor above and beyond general disgust. However, Study 3 found that only contamination disgust uniquely predicted behavioral avoidance in a public restroom where contamination concerns are salient. These findings suggest that although the three disgust domains are associated with contamination anxiety and avoidance, individual differences in contamination disgust sensitivity appear to be most uniquely predictive of contamination-related distress. The implications of these findings for the development and maintenance of anxiety-related disorders marked by excessive contamination concerns are discussed.

Inborn mechanisms of food preference and avoidance: the role of polymorphisms in neuromodulatory systems

Inborn mechanisms of food preference and avoidance: the role of polymorphisms in neuromodulatory systems

A delicious fly in the soup. The relationship between disgust, obesity, and restraint

Disgust is a core emotion that serves to protect one from engaging in activities that promote contamination and contracting disease. Since disgust is intimately connected to ingesting food, disgust sensitivity is probably also associated with dietary habits. The aim of the present study was to examine the relationship between obesity and disgust and between restraint and disgust. Participants (n=135, all female) were recruited and tested via the Internet. They indicated their desire to eat high-calorie foods and filled out several questionnaires assessing restrained eating and disgust sensitivity. We hypothesized that more restrained eaters would show increased disgust and that women with a higher BMI would show decreased disgust, which is what we found; that is, more restrained eaters showed increased core disgust and contamination disgust, whereas women with a higher BMI showed decreased core disgust and contamination disgust. Hence, feeling disgusted by food may be a strategy to uphold restraint, whereas relatively decreased disgust could encourage overeating.