Happy Faces Research Articles

Enhanced neural sensitivity to brief changes of happy over angry facial expressions in preschoolers: A fast periodic visual stimulation study.

Across childhood, emotion perception from facial expressions has traditionally been studied with event-related potentials (ERP). Here, we explored the novel fast periodic visual stimulation (FPVS) electroencephalography (EEG) approach to provide information about how brief changes in facial expressions are processed implicitly in young children's brains. Utilizing two FPVS tasks for the first time in preschoolers, we examined brain responses to (1) the discrimination of brief changes in facial expressions at maximum intensity and (2) thresholds for discrimination of gradual increasing facial expression intensities. Within a stream of neutral faces at 6 Hz, happy and angry faces were embedded with a frequency of 1.2 Hz. Additionally, children performed an emotion recognition task (ERT). Data were collected in the context of a training study for socio-emotional competencies with typically developing children (N = 74; 5.1[0.9] years; 34 females). FPVS data were collected post-training, where training was included as a controlling factor. Across FPVS tasks, we detected robust expression change responses, particularly with larger responses for happy versus angry faces in the maximum intensity task. ERT results paralleled neural findings with faster reaction times and higher accuracy rates for happy versus angry faces. For gradual increases in emotional intensity, we found linear increases in responses across emotions. The majority of the sample showed a significant expression change at 60% intensity. With its implicit nature, short duration, and robustness of individual responses, our results highlight the potential of FPVS in comparison to classical ERP methods to study neural mechanisms of emotion perception in preschool samples.

Impact of Image Content on Medical Crowdfunding Success: A Machine Learning Approach.

As crowdfunding sites proliferate, visual content often serves as the initial bridge connecting a project to its potential backers, underscoring the importance of image selection in effectively engaging an audience. This paper aims to explore the relationship between images and crowdfunding success in cancer-related crowdfunding projects. We used the Alibaba Cloud platform to detect individual features in images. In addition, we used the Recognize Anything Model to label images and obtain content tags. Furthermore, the discourse atomic topic model was used to generate image topics. After obtaining the image features and image content topics, we built regression models to investigate the factors that influence the results of crowdfunding success. Images with a higher proportion of young people (β=0.0753; P<.001), a larger number of people (β=0.00822; P<.001), and a larger proportion of smiling faces (β=0.0446; P<.001) had a higher success rate. Image content related to good things and patient health also contributed to crowdfunding success (β=0.082, P<.001; and β=0.036, P<.001, respectively). In addition, the interaction between image topics and image characteristics had a significant effect on the final fundraising outcome. For example, when smiling faces are considered in conjunction with the image topics, using more smiling faces in the rest and play theme increased the amount of money raised (β=0.0152; P<.001). We also examined causality through a counterfactual analysis, which confirmed the influence of the variables on crowdfunding success, consistent with the results of our regression models. In the realm of web-based medical crowdfunding, the importance of uploaded images cannot be overstated. Image characteristics, including the number of people depicted and the presence of youth, significantly improve fundraising results. In addition, the thematic choice of images in cancer crowdfunding efforts has a profound impact. Images that evoke beauty and resonate with health issues are more likely to result in increased donations. However, it is critical to recognize that reinforcing character traits in images of different themes has different effects on the success of crowdfunding campaigns.

Visual search attentional bias modification reduced the attentional bias in socially anxious individuals.

Recent years have raised questions about the effectiveness of attentional bias modification (ABM) in individuals with social anxiety. In the current study, we employed a novel training method-ABM-positive-search training-to modify attentional bias in socially anxious individuals. The attentional bias was measured using the dot-probe task, and brain electrical activity was recorded. The ABM-positive-search group was instructed to search for a happy face in a 3 × 3 visual array. The placebo control group was asked to find out whether the only male from the female or the only female from the male. In terms of behavioral indicators, the results showed a significant reduction in the variability of trial level-bias score (TL-BS) in the ABM-positive-search group post-training. However, there was no significant change observed in the placebo control group. The electrophysiological results were consistent with the behavioral findings. To be specific, both groups displayed the N2pc effect in response to threatening faces before the training. After training, the N2pc effect disappeared in the ABM-positive search group, while it remained in the placebo control group. In conclusion, ABM-positive-search training can effectively modify the attentional bias of socially anxious individuals, and cognitive control plays an important role in this process.

The impact of partially covered faces on trust attribution, sharing resources, and perceived fairness of one's own choices in Ultimatum Game.

Covered faces have been linked with impaired emotion recognition; yet, it is entirely unexplored how an occlusion due to face masks may affect individuals' behaviour in economic decisions. Across two studies, we explored whether partially covered faces (due to mask wearing or a horizontal black bar) and emotion displayed by the responder influence peoples' sharing behaviour in the Ultimatum Game and the perceived fairness of one's proposal.Study 1 showed participants were more willing to equally share their resources with a happy face (compared to a neutral one). In addition, they were more willing to make a fair proposal when the person displayed was not wearing a face mask. Our results also provide evidence that, when people had to judge how fair their proposal was, participants rated a fair proposal as fairer when responders showed happy faces without masks, while unfair proposals were rated as fairer with happy masked faces; similarly, angry faces led to fairer ratings for fair offers without masks and unfair offers with masks. Study 2 partially confirmed previous results, highlighting how a simple occlusion on the face does not have a direct effect on the proposal but moderates the effect of the displayed emotions.These findings indicate that social interactions might be affected by face occlusion, especially when it is represented by a face mask. Indeed, people might judge the same behaviour in different ways based on the fact that their counterpart has a partially covered face.

The impact of fear of pain on the temporal processing of emotional faces: modulation of attentional resources.

Recent research has focused on the spatial attention bias toward pain-related cues in individuals with fear of pain (FOP), but our understanding of its temporal attention features, particularly regarding emotional faces, is limited. To address this gap, 39 individuals with high fear of pain (H-FOP) and 37 with low fear of pain (L-FOP) completed a rapid serial visual presentation dual task. Participants viewed a series of rapidly presented pictures, first identified neutral building images as the first target (T1) and then emotional faces (painful, neutral, and happy) as the second target (T2). T1 and T2 presented at time intervals of 232ms (lag 2) and 696ms (lag 6), respectively. Results indicate that H-FOP group members were less accurate in recognizing faces at lag 2 shortly after correctly identifying T1 compared to those L-FOP group members. Notably, all participants were more accurate in recognizing painful faces at lag 2 than in identifying neutral and happy faces, suggesting a negative bias toward pain stimuli when attentional resources were limited. In contrast, at lag 6, when attentional resources were more abundant, participants showed greater accuracy in recognizing neutral faces than emotional faces. These findings underscore the influence of fear of pain and available cognitive resources on the attentional processing of emotional faces over time, providing insights into how fear of pain affects the temporal dynamics of emotional face recognition and the role of attentional resources.

A single-session feedback training modifies interpretation bias in individuals with high social anxiety: A randomized controlled trial.

The ability to interpret facial expressions accurately is important to adaptive social functioning. Social anxiety disorder is associated with a biased interpretation of facial emotions. This study aimed to demonstrate the effects of feedback training on modifying interpretation bias in individuals with high social anxiety. A total of 451 university students were screened, and 69 participants with high social anxiety were randomly assigned to either a training (n = 37) or a control (n = 32) group. Participants completed pre-questionnaires on social anxiety and depression symptoms, then performed a single session of experiment, followed by post-questionnaires on social anxiety symptoms. In the experiment, participants viewed an ambiguous facial expression and rated the intensity on a continuous scale. The training group received feedback that presented their ratings alongside the actual intensity, allowing them to accurately assess their emotional perception bias through trial-by-trial feedback. The control group received no feedback. The training group showed a significant reduction in interpretation bias for happy and angry faces after the experiment, while the control group did not. However, although the training group's social anxiety symptoms decreased post-experiment, the difference was not statistically significant compared to the control group. These findings provide preliminary evidence that the feedback training targeting dimensional ratings of emotions may be a promising option for correcting interpretation bias in individuals with high social anxiety. Future research could implement multiple sessions of training to potentially reduce both interpretation bias and social anxiety symptoms and verify the long-term effects.

Sky smiley face: Solutions for Fermi Questions, November 2024

Sky smiley face: Solutions for Fermi Questions, November 2024

Beyond pain privacy and pain meters: a new vision for pain biomarkers.

To an individual, pain is unambiguously real. To a caregiver, assessing pain in others is a challenging process shrouded in doubt. To explain this challenge, many assume that pain "belongs" exclusively to the bearer of that experience and accept the dogma that pain is private. However, privacy also entails that it is not possible to identify, share, or communicate that experience with others. Obviously, this is not true and the consequences of pain privacy would be devastating for healthcare. Pain is indeed unique and subjective, but not necessarily private. Pain is in fact readily communicable, though perhaps not as effectively and reliably as caregivers would like. On the other hand, healthcare systems mandate objective metrics in pain diagnosis. Smiley face caricatures are a staple of clinical practice and a universal standard for reporting pain levels. These conditions create a double paradox: Assess a private experience that is inaccessible, and use numerical scales to measure subjective attributes. Navigating this stressful environment, medical professionals experience intellectual dissonance, patients are frustrated, and value-based care is undermined. Offering a way out, first, we refute the privacy and objectification of pain citing philosophical, behavioral, and neuroscientific arguments. We discuss Wittgensteinian views against privacy, explore the clear evolutionary advantage of communicating pain to others, and identify neural circuits in the mammalian brain that contribute to empathy. Second, we highlight the subjectivity of pain, embracing the complexity and uniqueness of an individual's pain. We also provide compelling evidence for brain mechanisms that actively shape the pain experience according to predictive coding principles. Third, we offer a vision for the development of biomarker technologies that assess pain fairly without engendering bias against the patient's narrative. Our recommendations are based on the overwhelming appreciation that "medicine by emoji" is inadequate for capturing the multidimensional nature of pain. Our view is that the most promising candidates for pain biomarkers consist of self-reports as ground truth augmented by physiological signatures of biological relevance to pain. Integration of subjective and objective multimodal features will be key for the development of comprehensive pain assessment models.

The face pareidolia illusion drives a happy face advantage that is dependent on perceived gender.

The happy face advantage, the faster recognition of happy than of negative, angry or fearful, emotional expressions, has been reliably found and is modulated by social category cues, such as perceived gender, that is, is larger on female than on male faces. In this study, we tested whether this pattern of results is unique to human faces by investigating whether ambient examples of face pareidolia can also evoke a happy face advantage that is dependent on perceived gender. "Face pareidolia" describes the illusion of facial structure on inanimate objects, such as a tree trunk or a piece of burnt toast. While it has been shown that these illusory faces have expressions that can be recognized by participants, it is unknown whether they drive the same behavioral biases as real facial expressions. Thus, we measured the speed and accuracy with which the expressions of illusory faces that are perceived as female or male are recognized as happy or angry. We found a robust happy face advantage for illusory faces that were rated as more feminine in appearance. Concomitantly, we also found a robust angry face advantage for illusory faces that were rated as more masculine in appearance. Taken together, these findings demonstrate that illusory faces confer the same behavioral advantages as human faces. They also suggest that both perceived emotion and perceived gender are powerful socioevaluative dimensions that are extracted from visual stimuli that merely resemble human faces. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Is Buddhism without rebirth ‘nihilism with a happy face’?

Abstract I argue against pessimistic readings of the Buddhist tradition on which unawakened beings invariably have lives not worth living due to a preponderance of suffering (duḥkha) over well-being.

The role of task relevance in saccadic responses to facial expressions.

Recent research on healthy individuals suggests that the valence of emotional stimuli influences behavioral reactions only when relevant to ongoing tasks, as they impact reaching arm movements and gait only when the emotional content cued the responses. However, it has been suggested that emotional expressions elicit automatic gaze shifting, indicating that oculomotor behavior might differ from that of the upper and lower limbs. To investigate, 40 participants underwent two Go/No-go tasks, an emotion discrimination task (EDT) and a gender discrimination task (GDT). In the EDT, participants had to perform a saccade to a peripheral target upon the presentation of angry or happy faces and refrain from moving with neutral ones. In the GDT, the same images were shown, but participants responded based on the posers' gender. Participants displayed two behavioral strategies: a single saccade to the target (92.7%) or two saccades (7.3%), with the first directed at a task-salient feature, that is, the mouth in the EDT and the nose-eyes regions in the GDT. In both cases, the valence of facial expression impacted the saccades only when relevant to the response. Such evidence indicates the same principles govern the interplay between emotional stimuli and motor reactions despite the effectors employed.

Beyond the Whole: Reduced Empathy for Masked Emotional Faces Is Not Driven by Disrupted Configural Face Processing.

Sharing of emotional states is reduced for individuals wearing face coverings, but the mechanism behind this reduction remains unknown. Here, we investigated if face occlusion by masks reduces empathy by disrupting configural processing of emotional faces. Participants rated their empathy for happy and neutral faces which were presented in upright or inverted orientation and wore opaque, clear, or no face masks. Empathy ratings were reduced for masked faces (opaque or clear) as well as for inverted faces. Importantly, face inversion disrupted empathy more for faces wearing opaque masks relative to those wearing clear or no masks, which stands in contrast to the predictions generated by the classic configural processing models. We discuss these data within the context of classic and novel configural face perception models, and highlight that studying inverted occluded faces presents an informative case worthy of further investigation.

Modulatory effects of goal relevance on emotional attention reveal that fear has a distinct value

ABSTRACT Threat-related stimuli can capture attention. However, it remains debated whether this capture is automatic or not. To address this question, we compared attentional biases to emotional faces using a dot-probe task (DPT) where emotion was never goal-relevant (Experiment 1) or made directly task-relevant by means of induction trials (Experiments 2–3). Moreover, the contingency between the DPT and induction trials was either partial (Experiment 2) or full (Experiment 3). Eye-tracking was used to ascertain that the emotional cue and the subsequent target were processed with peripheral vision. Experiments 1 and 2 both showed that negative faces captured attention, with faster target processing when it appeared on the same side as the preceding fearful face (i.e. fear-valid trials) compared to the opposite side where the neutral face was shown (i.e. fear-invalid trials), but also when it appeared on the side of the preceding neutral face (i.e. happy-invalid trials) compared to the happy face (i.e. happy-valid trials). Importantly, this preferential spatial orienting to negative emotion was not observed in Experiment 3, where the goal relevance of emotion was high. However, in that experiment, fearful faces produced a specific attentional bias during the DPT, which was mostly driven by the induction trials themselves.

Eye-movement methodology reveals a shift in attention from threat to neutral stimuli with self-reported symptoms of social anxiety across children, adolescents and adults

ABSTRACT The current study used an eye-movement remote distractor paradigm (RDP) to examine the relationship between self-reported symptoms of social anxiety in children (9–11-year-olds), young adolescents (12–14-year-olds) and adults (18–43-year-olds) on saccade latencies to identify a target and saccadic errors to task irrelevant distractor (angry, neutral and happy faces). Distractors were presented simultaneously, either at the centre of the display, or at a contralateral parafoveal or peripheral location to the target. Symptoms of social anxiety in children were associated with increased saccade latencies in the presence of angry and neutral faces suggesting avoidance of these emotion expressions in this age group. Symptoms of social anxiety in adolescents and adults were respectively linked with longer latencies for neutral faces, indicating that neutral faces represent ambiguous and potentially negative stimuli for individuals with elevated social anxiety, and fit with research that has questioned the role of neutral faces as non-emotional control stimuli in attention research and anxiety.

The Development of Ambiguity Processing Is Explained by an Inverted U-Shaped Curve.

Understanding the developmental trajectories for recognizing facial expressions is important for a better understanding of development of psychiatric disorders. In this study, we examined the recognition of emotional and neutral facial expressions in 93 typically developing adolescents and adults. The Emotion Intensity Rating task required participants to rate the intensity of emotional expression in happy, neutral, and sad faces on a scale from 1 to 9. A score of '5' had to be assigned to neutral faces, scores between '6' (slightly happy) and '9' (very happy) to happy faces, and scores between '4' (slightly sad) and '1' (very sad) to sad faces. Mixed effects models were used to examine the effects of age and emotion on recognition accuracy, reaction time (RT), and emotional intensity. Participants tended to misjudge neutral faces as sad. Adolescents were less accurate than adults for neutral face recognition. There were significant quadratic effects of age on accuracy (negative quadratic effect) and RT (positive quadratic effect). The most accurate and fastest performance was observed in 25- to 35-year-old subjects. This trajectory may be associated with prefrontal cortex maturation, which provides top-down control over the heightened amygdala response to ambiguity that may be misinterpreted as emotional content.

Between faces: childhood adversity is associated with reduced threat-safety discrimination during facial expression processing in adolescence

BackgroundChildhood adversity has been associated with alterations in threat-related information processing, including heightened perceptual sensitivity and attention bias towards threatening facial expressions, as well as hostile attributions of neutral faces, although there is a large degree of variability and inconsistency in reported findings.MethodsHere, we aimed to implicitly measure neural facial expression processing in 120 adolescents between 12 and 16 years old with and without exposure to childhood adversity. Participants were excluded if they had any major medical or neurological disorder or intellectual disability, were pregnant, used psychotropic medication or reported acute suicidality or an ongoing abusive situation. We combined fast periodic visual stimulation with electroencephalography in two separate paradigms to assess the neural sensitivity and responsivity towards neutral and expressive, i.e. happy and angry, faces. Linear mixed effects models were used to assess the impact of childhood adversity on facial expression processing.ResultsSixty-six girls, 53 boys and one adolescent who identified as ‘other’, between 12 and 16 years old (M = 13.93), participated in the current study. Of those, 64 participants were exposed to childhood adversity. In contrast to our hypotheses, adolescents exposed to adversity show lower expression-discrimination responses for angry faces presented in between neutral faces and higher expression-discrimination responses for happy faces presented in between neutral faces than unexposed controls. Moreover, adolescents exposed to adversity, but not unexposed controls, showed lower neural responsivity to both angry and neutral faces that were simultaneously presented.ConclusionsWe therefore conclude that childhood adversity is associated with a hostile attribution of neutral faces, thereby reducing the dissimilarity between neutral and angry faces. This reduced threat-safety discrimination may increase risk for psychopathology in individuals exposed to childhood adversity.

Distinct patterns of emotional processing in ADHD and anxiety. Evidence from an eye-movement Go/No-Go task

ABSTRACT Young people with Attention-Deficit/Hyperactivity Disorder (ADHD) demonstrate cognitive control difficulties, particularly when emotional processing is involved. In contrast, individuals with anxiety show disruptions primarily in threat-related contexts. ADHD and anxiety frequently co-occur and the impact of emotional stimuli on cognitive processes in these groups remains unclear. This study used an eye-tracking Go/No-Go task with emotional (happy, angry) and neutral stimuli to explore attentional processing in children/adolescents with ADHD, anxiety and typically developing (TD) controls. The results showed that children with ADHD had slower disengagement from angry compared to happy faces, while those with anxiety exhibited no such differences. Inhibitory control challenges were evident in the ADHD group for both emotional faces, whereas the anxiety group demonstrated improved control with angry faces. Exploratory analyses suggested that children with comorbid ADHD and anxiety might have distinct cognitive-affective profile, characterized by heightened difficulties in processing emotional stimuli.

Do you look longer at attractive faces? It depends on what you are looking for.

Evolutionary psychology suggests that we are attuned to relevant information in the environment. For example, attention may be attracted by physical beauty because it is important for finding a partner with good reproductive health. Consistently, previous studies found that attention stayed longer on attractive than unattractive faces. We asked whether this tendency was automatic and varied participants' implicit search intentions to be either consistent or inconsistent with the presumably automatic tendency to attend to attractive faces. To create an implicit intention to look at attractive faces, participants searched for a happy face in an array of neutral faces because happy faces are rated as more attractive than neutral faces. To create the opposite intention to look at unattractive faces, participants searched for a disgusted or sad face because disgusted or sad faces are rated as less attractive than neutral faces. We found longer fixation durations on attractive faces when participants searched for happy faces. When participants searched for disgusted or sad faces, however, fixation durations were longer on unattractive faces. Thus, the search task determined whether attractive faces were looked at longer. The tendency to attend to attractive faces is therefore not automatic but can be overruled by search intentions.

Acute effects of exercise on gaze fixation and affective response inhibition in children with autism spectrum disorder: A randomized cross-over study.

Children with autism spectrum disorder (ASD) show impairments in response inhibition, especially in socio-emotional contexts. A single aerobic exercise session has the potential to temporarily reduce such impairments as findings from neurotypical children support acute benefits of this exercise type for inhibitory control and emotion recognition. In children with ASD, we therefore aimed to investigate the effects of an aerobic exercise bout on response inhibition in an emotional Go/NoGo task and gaze fixation as possible mechanism underlying changes in performance. Using a cross-over design, 29 patients completed a 20-min aerobic exercise bout at moderate intensity on a cycling ergometer and a control condition in a randomized order. An emotional Go/NoGo task was administered before and after both experimental conditions. Eye-tracking was performed during the cognitive task to assess the duration of gaze fixation of eyes and mouth parts of faces expressing happy or sad emotions. The results support no beneficial effect of exercise on performance on the emotional Go/NoGo task. Instead, patients showed a greater decrease in accuracy on Go trials displaying happy faces in the exercise compared to the control condition. This change was associated with a more pronounced decrease in the fixation duration of the eyes for faces expressing either happy or sad emotions. In conclusion, while a single session of moderately intense aerobic exercise does not affect response inhibition, it temporarily aggravates ASD-specific deficits in the processing of and response to facial emotions.

The effect of aging on the dual-route model of emotion processing applied to memory recognition.

Emotional faces are automatically processed in the human brain through a cortical route (conscious processing based on high spatial frequencies, HSF) and a subcortical route (subliminal processing based on low spatial frequencies, LSF). How each route contributes to emotional face recognition is still debated, and little is known about this process in aging. Here, 147 younger adults (YA) and 137 older adults (OA) were passively presented with neutral, happy, and angry faces, shown as (a) unfiltered, (b) filtered at LSF, and (c) hybrid (emotional LSF superimposed to the neutral HSF of the same face). In a succeeding recognition phase, the same faces and new faces were shown as unfiltered, and participants were asked whether each face had been already presented in the encoding phase. Despite the better performance by YA compared with OA for neutral faces presented as unfiltered (cortical route), the performance of OA was better than that of YA for angry faces presented as hybrid and for happy faces presented at LSF and as hybrid. We conclude that the activity of the subcortical route during the encoding phase facilitates emotional recognition in aging. Results are discussed in accordance with the dual-route model. (PsycInfo Database Record (c) 2024 APA, all rights reserved).