Mood Induction Procedure Research Articles

How effective are films in inducing positive and negative emotional states? A meta-analysis.

Meta-analyses and reviews on emotion research have shown the use of film clips to be one of the most effective methods of mood induction. Nonetheless, the effectiveness of this method when positive, negative and neutral emotional targets are studied under similar experimental conditions is currently unknown. This comprehensive meta-analysis included only studies that implemented neutral, positive and negative mood inductions to evaluate the effectiveness of the film clip method as a mood induction procedure. In addition, several factors related to the films, sample and experimental procedure used, the number of emotional categories, for example, or the number of film clips watched, were included to study their influence on the effectiveness of this mood induction procedure. Forty-five studies were included with 6675 participants and 12 possible moderator variables according to the sample and the research procedure. Our findings suggest that film clips are especially powerful in inducing negative mood states (Hedges’ g for valence = -1.49 and for arousal = -1.77) although they are also effective inducers of positive mood states (Hedges’ g for valence of = . -1.22 and for arousal = -1.34). Additionally, this meta-analysis reveals that variables, such as the number of emotional categories or the type of stimulus used to measure the baseline, should be considered.

Psychological effects and brain correlates of a rose‐based scented cosmetic cream

AbstractIn the present study, we investigated the effects of a cosmetic cream with a rose based formula scent on mood, in a sample of 26 female participants, with a mean age of 27.42 years of age. We looked at psychological measures (e.g., mood‐based self‐reports scales) and brain‐related correlates (e.g., brain activation patterns) of stress/relaxation in the scented versus an odorless skin care cream with the same physical characteristics. We employed a mood induction procedure using a face‐processing task based on positive, neutral, and negative faces. Results showed that the scented cream led to more happiness no matter the sequence of presentation and was associated to more relaxation, satisfaction, happiness, and less stress if presented after the odorless cream. The use of scented cream also increased the discharge in the brain area related to the task of face perception, and also modulated the discharge of the area involved in pleasure perception and reward.Practical applicationsResults of the present study provide important data on the scent formulas that can be effectively used in cosmetics in order to boost their effects on mood.

Is comfort food actually comforting for emotional eaters? A (moderated) mediation analysis

An important but unreplicated earlier finding on comfort eating was that the association between food intake and immediate mood improvement appeared to be mediated by the palatability of the food, and that this effect was more pronounced for high than for low emotional eaters [26]. This has not yet been formally tested using mediation and moderated mediation analysis. We conducted these analyses using data from two experiments on non-obese female students (n = 29 and n = 74). Mood and eating satisfaction in Study 1, and mood, tastiness and emotional eating in Study 2 were all self-reported. In Study 1, using a sad mood induction procedure, emotional eaters ate more food, and when mood was assessed immediately after food intake, ‘eating satisfaction’ acted as mediator between food intake and mood improvement (decrease in sadness or increase in happiness). In Study 2, where we measured the difference in actual food intake after a control or a stress task (modified Trier Social Stress Test), and assessed mood during the food intake after stress, we found significant moderated mediation. As expected, there was a significant positive mediation effect of tastiness between food intake and mood improvement in the high emotional eaters, but also a significant negative mediation effect of tastiness between food intake and mood improvement in the low emotional eaters. This suggests that tastiness promotes ‘comfort’ from food in female emotional eaters, but conflicts in non-emotional eaters with a tendency to eat less when stressed. In conclusion, palatable food may indeed provide comfort specifically for high emotional eaters during eating.

The Other End of the Line

Abstract. The two hemispheres of the human brain are asymmetrically involved in representing a person’s motivational orientation: Approach motivation is reflected in greater activation of the left hemisphere, whereas avoidance motivation more strongly activates the right hemisphere. Visuospatial bias, as assessed in the line-bisection task, is often used as a simple behavioral measure of relative hemispheric activation. In three experiments, we investigated whether affect-induced approach and avoidance motivation are associated with spatial biases in line-bisection performance. Happy or terrifying pictures (Experiment 1, N = 70), happy or sad music (Experiment 2, N = 50), and joyful or frightening videos (Experiment 3, N = 90) were used to induce negative and positive affect. Mood-induction procedures successfully changed emotional states in the intended direction. However, our analyses revealed no effect of mood on visuospatial biases in the line-bisection task. Additional Bayesian analyses also provided more evidence against the hypothesized effect than in favor of it. Thus, visuospatial bias in line bisection does not seem to be a sensitive measure of approach and avoidance motivation induced by positive and negative affect.

Online validation of combined mood induction procedures.

Film clips, music, and self-referential statements (termed Velten, after their originator) have been successfully used to temporarily induce sadness and happiness. However, there is little research on the effectiveness of these procedures combined, particularly in internet-based settings, and whether Velten statements contribute to alter mood beyond the effect of simple instructions to close one's eyes and enter the targeted mood. In Study 1 (N = 106) we examined the effectiveness 80 Velten statements (positive, negative, neutral-self, neutral-facts) to create brief and effective sets that might be used in future research. In Study 2 (N = 445) we examined the effect size of 8-min combined mood induction procedures, which presented video clips in the first half and music excerpts with Velten statements or closed eyes instructions in the second half. Participants answered questionnaires on social desirability, joviality, and sadness before being randomly assigned to 1 of 7 groups varying in Valence (positive, negative, neutral) and Velten (closed eyes control, self-referential Velten, and, in the case of neutral condition, factual statements). Subsequently, participants completed the joviality and sadness scales a second time. Compared to the neutral conditions, the positive mood inductions increased joviality (Hedges G = 1.35, 95% CI [1.07, 1.63]), whereas the negative mood inductions increased sadness (Hedges G = 1.28, 95% CI [1.01, 1.55]). We did not observe any significant difference between Velten and closed eyes instructions in inducing joviality or sadness, nor did we observe any significant difference between neutral Velten statements referring to self and facts. Although social desirability bias was associated with reports of greater joviality and lower sadness, it could not account for the effects of the positive and negative mood induction procedures. We conclude that these combined mood induction procedures can be used in online research to study happy and sad mood.

Impact of Glabellar Paralysis on Facial Expression of Emotion.

Many prospective patients remain wary of the effects that glabellar muscle paralysis may have on their ability to normally communicate emotion with their face. We undertook a direct empirical test of the effects of glabellar onabotulinum toxin type A injections on the ability to convey 6 universally recognized facial expressions of emotion. Fifty-two female subjects ("expressors") were recorded on hidden camera while viewing video clips intended as a mood induction procedure that stimulates the 6 cardinal emotions (amusement, anger, disgust, fear, sadness, surprise). The subjects were then injected with 25 units of onabotulinum toxin A in the glabellar region. The subjects returned 1 month later and were again recorded while being spontaneously induced to express emotion. All video clips from both time periods from the 10 maximal expressors were extracted and shown to a group of 31 "perceivers" who rated the facial expressions for intensity (Likert 1-7) and identity of emotion (percent correct emotion identified). Glabellar paralysis significantly diminished mean perceived intensity of anger (50.4% relative reduction, P < 0.001) and surprise (20.6% relative reduction, P < 0.001). The mean intensity of disgust increased (39.0%, P < 0.001). Importantly, however, glabellar paralysis did not result in a significant change in observers' ability to discern provoked cardinal emotions. We believe these findings provide a measure of reassurance to patients and their providers that the use of onabotulinum toxin A to paralyze the glabellar musculature for aesthetic purposes may not pose a meaningful risk to the overall ability to express emotion during social interaction.

Effects of Mindfulness on Negative Affect, Body Dissatisfaction, and Disordered Eating Urges

Eating disorders are debilitating mental illnesses characterized by disturbances in eating behaviors and weight regulation. Risk factors associated with disordered eating behaviors include negative affect and body dissatisfaction. Whereas mindfulness-based interventions have been shown to be effective in treating selected eating disorders, few studies have investigated the effects of brief mindfulness training on core features of eating disorders. Using a laboratory experimental design, the present study aimed to investigate the effects of a brief mindfulness induction on negative mood, implicit and explicit body dissatisfaction, and disordered eating urges in a sample of female college students with elevated eating disorder symptoms. Eighty-one students who met criteria for full or subthreshold diagnosis of anorexia nervosa, bulimia nervosa, or binge eating disorder were recruited from a large Singaporean university and randomly assigned to either a brief mindful breathing exercise or a resting control condition, following a negative mood induction procedure. Analyses showed that the mindfulness induction resulted in significantly lower negative affect compared to the control condition, p = .001. There were trends for lower explicit body dissatisfaction and urges to engage in compensatory behaviors in the mindfulness condition versus the control condition. No effects on implicit body dissatisfaction or binge eating urges were observed. Overall, the findings highlight changes in negative affect as a potential mechanism underlying the effects of mindfulness-based interventions in treating eating disorders.

DEMoS: an Italian emotional speech corpus

We present DEMoS (Database of Elicited Mood in Speech), a new, large database with Italian emotional speech: 68 speakers, some 9 k speech samples. As Italian is under-represented in speech emotion research, for a comparison with the state-of-the-art, we model the ‘big 6 emotions’ and guilt. Besides making available this database for research, our contribution is three-fold: First, we employ a variety of mood induction procedures, whose combinations are especially tailored for specific emotions. Second, we use combinations of selection procedures such as an alexithymia test and self- and external assessment, obtaining 1,5 k (proto-) typical samples; these were used in a perception test (86 native Italian subjects, categorical identification and dimensional rating). Third, machine learning techniques—based on standardised brute-forced openSMILE ComParE features and support vector machine classifiers—were applied to assess how emotional typicality and sample size might impact machine learning efficiency. Our results are three-fold as well: First, we show that appropriate induction techniques ensure the collection of valid samples, whereas the type of self-assessment employed turned out not to be a meaningful measurement. Second, emotional typicality—which shows up in an acoustic analysis of prosodic main features—in contrast to sample size is not an essential feature for successfully training machine learning models. Third, the perceptual findings demonstrate that the confusion patterns mostly relate to cultural rules and to ambiguous emotions.

Please be logical, I am in a bad mood: An electrophysiological study of mood effects on reasoning

Several behavioral studies have reported a detrimental effect of emotion on reasoning tasks, either when the content of the reasoning and/or the mood state of the individual are emotionally loaded. However, the neural mechanisms involved in this phenomena remain largely unexplored. In an event-related potentials (ERPs) study, we examined the consequences of an induced mood over the electrophysiological signals obtained while processing logical and illogical categorical conclusions. Prior to performing a syllogism reading task, we aimed to induce, by using short film clips, high arousal negative and positive moods and neutral affective states to participants in three separate recording sessions. Our mood induction procedure was only successful at inducing a highly arousing negative state. Behaviorally, participants committed more errors overall while judging the invalidity versus the validity of illogical and logical conclusions, respectively, but no influences from mood state emerged at this logical validity task. Electrophysiologically and overall a negative going N400 deflection was larger for illogical relative to logical conclusions in a parietal region between 300 and 420 ms. However, further analysis revealed that the logical conclusions were only more expected (smaller N400 amplitudes) in the negative relative to the neutral and the positive sessions, providing support to theoretical views that posit that a more analytic reasoning style might be implemented under a negative mood state. These results provide further electrophysiological evidence of the influence of mood on other cognitive processes, particularly on the anticipation and processing of logical conclusions during online reasoning tasks.

Leaning forward to increase approach motivation! The role of joy, exercise, and posture in achieving goals

Positive affect, exercise, and leaning forward body postures have been shown to play a role in the motivational variables that assist in the goal achievement process. The aim of this study is to analyze whether the manipulation of the body (via posture) and behavior (via exercise) increases approach motivation to achieve a personal goal while individuals are joy-induced through a virtual reality mood-induction procedure (VR-MIP). The sample was composed of 85 volunteers (Mage = 23.92; 76.5% women) who were assigned to three conditions in which their posture and movements were manipulated during a joy VR-MIP: high-approach motivation condition (leaning forward posture plus pedaling); medium-approach motivation condition (reclining backward posture plus pedaling); and low-approach motivation condition (reclining backward posture without pedaling). This study highlights that adopting a leaning forward posture while pedaling during joy induction increases approach motivation to achieve a personal goal, and the role of joy as a moderator in this relationship.

Negative mood induction: Affective reactivity in recurrent, but not persistent depression.

BackgroundDespite the high clinical and epidemiological relevance of persistent depression, little is known about its specific psychopathology and whether it is distinct from recurrent depression. Depression in general has been associated with blunted affective reactivity but the evidence from previous studies is inconsistent. Here, we asked whether affective reactivity might differ between persistent and recurrent depression.MethodsTwenty patients with persistent depression, 20 patients with recurrent depression and 20 healthy controls (HC) were recruited. Both patient groups showed moderate symptom severity. All participants underwent a sad mood induction procedure. Affective reactivity was assessed with the Positive and Negative Affect Schedule (PANAS) before and after mood induction.ResultsWe found a striking difference in affective reactivity between patient groups. While the persistent group showed blunted reactivity to mood induction, the recurrent group demonstrated an affective response that was comparable to HC, with an increase in negative and a decrease in positive affect. Blunted affective reactivity was thus specifically associated with persistent in contrast to recurrent depression.ConclusionsThese results highlight affective reactivity as an important psychopathological feature that differs between the two patient groups. Preserved affective reactivity to emotional stimuli in the recurrent group might reflect a resilience factor against persistence of depression.

Moral and Affective Film Set (MAAFS): A normed moral video database.

Moral psychology has relied nearly exclusively on text stimuli in the development and testing of theories. However, text stimuli lack the rich variety of morally-relevant social and contextual cues available in everyday interactions. A consequence of this pervasive ecological invalidity may be that moral psychological theories are mischaracterized by an overreliance on cue-impoverished moral stimuli. We address this limitation by developing a cue-rich Moral and Affective Film Set (MAAFS). We crowd-sourced videos of moral behaviours, using previously validated text stimuli and definitions of moral foundations as a guide for content. Crowd-sourced clips were rated by 322 American and 253 Australian participants on a range of moral and affective dimensions, including wrongness, moral foundation relevance, punishment, arousal, discrete emotion-relevance, clarity, previous exposure, and how weird/uncommon the moral acts were. The final stimulus set contained sixty nine moral videos. Ratings confirmed that the videos are reliably rated as morally wrong and feature a variety of moral concerns. The validation process revealed features that make the MAAFS useful for future research: (1) the MAAFS includes a range of videos that depict everyday transgressions, (2) certain videos evoke negative emotions at an intensity comparable to mood induction films, (3) the videos are largely novel: participants had never seen more than 90% of the videos. We anticipate the MAAFS will be a particularly valuable tool for researchers in moral psychology who seek to study morality in scenarios that approximate real-life. However, the MAAFS may be valuable for other fields of psychology, for example, affective scientists may use these videos as a mood induction procedure. The complete stimulus set, links to videos, and normative statistics can be accessed at osf.io/8w3en.

More is not always better: Strategies to regulate negative mood induction in women with borderline personality disorder and depressive and anxiety disorders.

Individuals with borderline personality disorder (BPD) have difficulties regulating emotions, which may be a consequence of using less effective emotion regulation (ER) strategies to lessen the intensity of their negative emotions. It is not yet known whether people with BPD utilize particular ER strategies to modulate specific mood states and if these strategies are different from those used by individuals with depressive and anxiety disorders. In the present study, 90 participants (30 BPD, 30 anxiety and/or depressive disorders, and 30 healthy controls) underwent a mood induction procedure and specified which ER strategies they used and their perceived difficulty regulating mood following induction. Compared with healthy controls, BPD endorsed higher negative mood prior to, immediately following, and 4 min after neutral and negative mood inductions; more maladaptive ER strategies (e.g., rumination); and more perceived difficulty regulating negative mood. Compared with anxiety and/or depressive disorders, BPD endorsed similar ER strategies and subjective difficulty during mood inductions, endorsed higher negative mood following a neutral video and 1 negative video, and recorded higher RSA reactivity during and following 2 negative videos. Results suggest that individuals with BPD use a higher number of maladaptive ER strategies compared with healthy controls, which may lead to less effective modulation of negative mood and higher reports of difficulty regulating emotions. In addition, physiological measurements indicated that individuals with BPD may have higher RSA reactivity in response to negative mood induction compared with other mental disorders, which may reflect inefficient or disorganized attempts to regulate emotional arousal. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

The effects of children’s proximity‐seeking to maternal attachment figures during mild stress exposure on mood and physiological responses: An experimental study

AbstractIn this study we investigated the effects of seeking versus avoiding proximity to mother on children’s emotional recovery from a stressor. Sixty children 9–12 years underwent a moodinduction procedure and were randomly assigned to seek proximity from or avoid an image of their mothers. The effect of this manipulation on children’s self‐reported negative emotions, skin conductance and heart rate variability (respiratory sinus arhythmia) was assessed. Higher levels of attachment anxiety were linked to more self‐reported sadness when children had to avoid mother, but no evidence for such an effect was found on a physiological level. For avoidant attachment, a similar pattern of results emerged, but both for self‐reported sadness and skin conductance.

Neurocognitive mechanisms of emotion-related impulsivity: The role of arousal.

Prior research suggests that a traitlike tendency to experience impulsivity during states of high emotion is robustly associated with many forms of psychopathology. Several studies tie emotion-related impulsivity to response inhibition deficits, but these studies have not focused on the role of emotion or arousal within subjects. The present study tested whether arousal, measured by pupil dilation, amplifies deficits in response inhibition for those high in emotion-related impulsivity. Participants (N=85) completed a measure of emotion-related impulsivity, underwent a positive mood induction procedure that reduced heterogeneity in mood states, and completed a response inhibition task. Pupil dilation was used to index arousal during the response inhibition task. Generalized linear mixed effect modeling yielded the hypothesized interaction between arousal (pupil dilation) and emotion-related impulsivity in predicting response inhibition performance at the trial level. Emotion-related impulsivity relates to more difficulties with response inhibition during moments of high arousal.

The influence of induced mood on music preference.

The purpose of this study was to clarify the impact of different self-centered moods on music preference without listening to music. Participants' affective state (sad vs. happy vs. neutral) were experimentally manipulated through the mood induction procedure, and then their preferences for music were ascertained through self-reports. To understand participants' internal motivations for their choices, we also asked them to indicate how appropriate he/she felt it would be to select the different music types as well as why they made such choices. Results suggested that participants in a sad mood were inclined to listen to sad (and slow) music, those in a happy mood preferred to listen to happy (and fast) music, and those in a neutral mood did not consistently prefer to listen to neutral music. In addition, participants were averse to sad music when they were in a happy or neutral mood; while they showed no aversion to happy music when they were in a sad mood. In conclusion, individuals select valence-consistent music when they are in an autobiographical memory-induced mood state.

Mood impedes monitoring of emotional false memories: evidence for the associative theories

ABSTRACTIn the present experiment, we investigated whether warnings provided at the time of retrieval would reduce emotional false memories in the Deese-Roediger-McDermott (DRM) paradigm. The provision of retrieval warnings allowed us to test specific predictions based on the associative theories (e.g., Activation-Monitoring Theory; AMT) and Fuzzy-Trace Theory (FTT) that have been used to account for false memories in the DRM paradigm. Participants were randomly assigned to either a no-warning group or a retrieval-warning group. In each group, mood-induction procedures were used to elicit a positive, negative, or neutral mood and participants were then presented with word lists comprised of positive, negative, or neutral words. Retrieval warnings reduced false recognition, regardless of the valence of the to-be-remembered information or participants’ mood. Consistent with the associative theories’ predictions, within the warning condition, positive moods yielded greater false recognition for positive critical lures, and negative moods yielded greater false recognition for negative critical lures, compared to neutral moods. These findings have important practical implications for our understanding of the effect of mood on memory.

Emotional Differences in Young and Older Adults: Films as Mood Induction Procedure.

Film clips are proven to be one of the most efficient techniques in emotional induction. However, there is scant literature on the effect of this procedure in older adults and, specifically, the effect of using different positive stimuli. Thus, the aim of the present study was to examine emotional differences between young and older adults and to know how a set of film clips works as mood induction procedure in older adults, especially, when trying to elicit attachment-related emotions. To this end, we use this procedure to analyze differences in subjective emotional response between young and older adults. A sample of 57 older adults and 83 young adults watched a film set previously validated in young population. Their responses were studied in an individual laboratory session to elicit 6 target emotions (disgust, fear, sadness, anger, amusement and tenderness) and neutral state. Self-reported emotional experience was measured using the Self-Assessment Manikin (SAM). Our results show that film clips are capable of evoking positive and negative emotions in older adults. Furthermore, older adults experienced more intensely negative emotions than young adults, especially in response to disgust and fear clips. They also reported higher arousal than young adults, especially in the case of sadness, anger and tenderness clips. Nevertheless, the older adults recovered more easily from the effects of the emotion induction. The young adults reported higher arousal ratings than older adults in response to amusement film clips. On the other hand, this study reflects the importance of controlling the baseline state to study the real strength of mood induction. Overall, current data suggests significant differences occur in emotional response in adult age and that film clips are an effective tool for studying positive and negative emotions in aging research.

An examination of generalised implicit biases towards ‘wanting more’ as a proxy measure of materialistic behaviour: A Relational Frame Theory (RFT) perspective

The research investigated the contextual effects of mood on implicit measures of ‘wanting more’ as a proxy of materialism and investigated the basic verbal processes underpinning this behaviour. Sixty university students were recruited to participate. Participants were exposed to either a positive (n = 21), negative (n = 20) or neutral (n = 19) mood induction procedure; an Implicit Relational Assessment Procedure (IRAP) examining biases towards wanting more or less; and questionnaires assessing life satisfaction (Satisfaction with Life Scale; SWLS), materialism (Material Values Scale; MVS), and positive and negative affect (Positive and Negative Affect Schedule; PANAS). On the IRAP, shorter mean response latencies across consistent (more-good/less-bad) compared to inconsistent (more-bad/less-good) trial-blocks were interpreted as an implicit bias towards ‘wanting more’. Compared to the neutral mood condition, participants in the positive mood condition demonstrated an increased bias towards ‘wanting less’ (p = .028). Several predicted associations were also observed. Measures of negative affect and reduced life satisfaction were significantly associated with an implicit bias towards ‘wanting more’ (rs's ranging from − .455 to − .565, p's ranging from .01 to .038), while reduced levels of materialism were significantly correlated with an implicit bias towards wanting less (rs = .579, p = .006). The findings provide preliminary support for the IRAP as a generalised implicit measure of ‘wanting more’ as a proxy of materialism; and suggest that changes in mood may influence this effect. Findings are discussed from a Relational Frame Theory (RFT) perspective.

Mobile Virtual Reality as an Educational Platform: A Pilot Study on the Impact of Immersion and Positive Emotion Induction in the Learning Process

The purpose of this study is to evaluate the influence of emotional induction and level of immersion on knowledge acquisition and motivation. Two conditions were used for immersion modulation: a high immersive condition, which consisted of the viewing of educational content through a head-mounted-display; and a low immersive condition, which was achieved through direct viewing on a tablet. The emotional conditions, created through video simulation, consisted of a positive versus neutral mood induction procedure. The participants were 56 high school students enrolled on a social science course. The results indicate a significant effect of the positive emotion/high immersive condition in knowledge acquisition while positive emotion induction had a positive effect on the interest subscale of the motivation assessment tool used for both immersive conditions.