Does a look of fear prompt to act? The effects of gaze and face emotional expression on manipulable objects

Gaze direction is an important social cue for understanding the intentions of other people. Indeed, interacting with others requires the ability to encode their current focus of attention in order to predict their future actions. Previous studies have showed that when asked to detect or identify a target, people are faster if shown a gaze oriented toward rather than away from that target. Most importantly, there is evidence that the emotion conveyed by the face with the averted gaze matters. We further tested the interplay between gaze and face emotion in the context of manipulable objects to understand whether and to what extent other people's gaze influences our own actions toward objects. Participants judged whether a target graspable object was upright or inverted after viewing a face cue with a central or averted gaze. Importantly, the target's handle could be oriented toward the gazed-at location or the opposite side such that gaze and handle were corresponding or non-corresponding in space. Furthermore, we manipulated the expression of the cue by using neutral and fearful faces. Results showed a handle-response (H-R) compatibility effect (i.e., a facilitation when the response key is on the same side as the object's handle) only with fearful cues with a central gaze

From Amodal to Grounded to Hybrid Accounts of Knowledge: New Evidence from the Investigation of the Modality-Switch Effect

My dissertation sets out to contribute to the ongoing theoretical debate on the format of conceptual representation from both a theoretic (Part 1) and an experimental point of view (Part 2). From a theoretic point of view, it is attempted to show that the amodal and grounded views do not bear incompatible claims. On the contrary, grounded cognitition has complemented traditional approaches taking into account the modalities, the body, and the environment’s influence on cognitive mechanisms. From an experimental point of view, this dissertation is committed to testing predictions coming from grounded accounts of knowledge. Specifically, it is aimed at verifying the assumption that modality-specific representations underlie concepts and conceptual processing through the investigation of the Modality-Switch Effect, a cost for performance in terms of speed and accuracy occurring when two different sensory modality properties for concepts alternate compared to when the same sensory modality property is presented. Four experiments were conducted. Experiments 1 & 2 (Study 1) allowed the author to demonstrate that the Modality-Switch Effect is an automatic robust effect arising during both reading and speech processing. Experiments 3 & 4 (Study 2) assessed the impact of the mode of presentation of stimuli (i.e., visual: through the monitor, aural: through a pair of headphones) on the conceptual Modality-Switch Effect. It is shown that the mode of presentation effect weakens the conceptual Modality-Switch Effect in both a property verification and a lexical decision priming paradigms. In sum, the extensive analysis of amodal and grounded views taken together with the innovative findings reported in this dissertation led the author to suggest that hybrid approaches, that combine aspects of both views, should be preferred over the amodal-only and grounded-only accounts

Seeing the Bees Buzz and Hearing the Diamonds Glisten: The Effect of the Mode of Presentation of Stimuli on the Modality-Switch Effect

Previous studies showed that the sequential verification of different sensory modality properties for concepts (e.g.,BLENDER-loud; BANANA-yellow) incurs a processing cost, known as the modality-switch effect (Pecher et al. 2003; 2004).We assessed the influence of the mode of presentation of stimuli on the modality-switch effect in a property verification primingparadigm. Participants were required to perform a property verification task on a target sentence (e.g., “butter is yellowish”,“leaves rustle”) presented either visually or aurally after having been presented with a prime sentence (e.g., “the light is flick-ering”, “the sound is echoing”) that could either share both, one or none of the target’s mode of presentation and contentmodality. Results showed that the presentation and the content-driven effects were not cumulative. We conclude that the MSEis a two-fold effect which can occur at two different levels of information processing (i.e., perceptual and semantic)

Comparing Stroop-like and Simon Effects on Perceptual Features

Stroop-like and Simon tasks produce two sources of interference in human information processing. Despite being logically similar, it is still debated whether the conflicts ensuing from the two tasks are resolved by the same or different mechanisms. In the present study, we compare two accounts of the Stroop-like effect. According to the Perceptual Account, the Stroop-like effect is due to Stimulus-Stimulus congruence. According to the Decisional Account, the Stroop-like effect results from the same mechanisms that produce the Simon effect, that is, Stimulus-Response compatibility. In two experiments we produced Stroop-like and Simon effects by presenting left/right-located stimuli consisting of a colored square surrounded by a frame of the same color as the square or of a different color. Results showed that discriminating either the color of the square (Experiment 1) or that of the frame (Experiment 2) yielded additive Stroop-like and Simon effects. In addition, the patterns of temporal distributions of the two effects were different. These results support the Perceptual Account of the Stroop-like effect and the notion that the Stroop-like effect and the Simon effect occur at different processing stages and are attributable to different mechanisms

Assessing Interpersonal Proximity Evaluation in the COVID-19 Era: Evidence From the Affective Priming Task

Social proximity has since ever been evaluated as positive. However, the outbreak of the COVID-19 pandemic has dramatically reduced our social relations to avoid spreading the contagion. The present study aims to investigate people's current assessment of social proximity by using an affective priming paradigm (APP). We hypothesized that if our evaluation of social proximity is positive, then words with positive valence (e.g., relaxed) should be processed faster when preceded by images of social proximity than social distancing. On the contrary, if our evaluation of social proximity is turning negative, then words with a negative valence (e.g., sad) should be processed faster when preceded by images of social proximity than social distancing. To this end, we presented participants with prime images showing line drawings representing humans in situations of proximity or distancing and asked them to evaluate the valence (i.e., positive or negative) of a subsequent target word. In a follow-up session, the same participants evaluated the prime images as being positively or negatively valenced. Results showed that a large subset of participants who rated the prime images of social proximity as positive also processed positive words faster when these were preceded by images of social proximity than social distancing. Conversely, a smaller subset of participants who rated the prime images of social proximity as less positive processed negative words faster when these were preceded by images of social proximity than social distancing. These results suggest individual differences in the assessment of social proximity likely driven by the pandemic

Does Social distancing affect the processing of brand logos?

Social distancing and isolation have been imposed to contrast the spread of COVID-19. The present study investigates whether social distancing affects our cognitive system, in particular the processing of different types of brand logos in different moments of the pandemic spread in Italy. In a size discrimination task, six different logos belonging to three categories (letters, symbols, and social images) were presented in their original format and spaced. Two samples of participants were tested: one just after the pandemic spread in Italy, the other one after six months. Results showed an overall distancing effect (i.e., spaced stimuli are processed slower than original ones) that interacted with the sample, revealing a significant effect only for participants belonging to the second sample. However, both groups showed a distancing effect modulated by the type of logo as it only emerged for social images. Results suggest that social distancing behaviors have been integrated in our cognitive system as they appear to affect our perception of distance when social images are involved

Wearing the face mask affects our social attention over space

Recent studies suggest that covering the face inhibits the recognition of identity and emotional expressions. However, it might also make the eyes more salient, since they are a reliable index to orient our social and spatial attention. This study investigates (1) whether the pervasive interaction with people with face masks fostered by the COVID-19 pandemic modulates the processing of spatial information essential to shift attention according to other's eye-gaze direction (i.e., gaze-cueing effect: GCE), and (2) whether this potential modulation interacts with motor responses (i.e., Simon effect). Participants were presented with face cues orienting their gaze to a congruent or incongruent target letter location (gaze-cueing paradigm) while wearing a surgical mask (Mask), a patch (Control), or nothing (No-Mask). The task required to discriminate the identity of the lateralized target letters by pressing one of two lateralized response keys, in a corresponding or a non-corresponding position with respect to the target. Results showed that GCE was not modulated by the presence of the Mask, but it occurred in the No-Mask condition, confirming previous studies. Crucially, the GCE interacted with Simon effect in the Mask and Control conditions, though in different ways. While in the Mask condition the GCE emerged only when target and response positions corresponded (i.e., Simon-corresponding trials), in the Control condition it emerged only when they did not correspond (i.e., Simon-non-corresponding trials). These results indicate that people with face masks induce us to jointly orient our visual attention in the direction of the seen gaze (GCE) in those conditions resembling (or associated with) a general approaching behavior (Simon-corresponding trials). This is likely promoted by the fact that we tend to perceive wearing the mask as a personal safety measure and, thus, someone wearing the face mask is perceived as a trustworthy person. In contrast, people with a patch on their face can be perceived as more threatening, therefore inducing a GCE in those conditions associated with a general avoidance behavior (Simon-non-corresponding trials)