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1.
J Exp Psychol Anim Learn Cogn ; 50(3): 210-224, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-39101918

RESUMEN

Four experiments examined human ratings of causal effectiveness, and ability to detect causal relationships, in a nonverbal paradigm. Participants responded on a concurrent random interval, extinction schedule. In the presence of one stimulus, responses produced an outcome (triangle flash); in the presence of the other stimulus, they did not. Following making a judgment of causal effectiveness, two further stimuli were presented simultaneously with one another, and participants had to select one depending on which of the previous two stimuli were associated with effective responses. In all experiments, immediate outcomes were associated with higher causal ratings and better causal detection than outcomes delayed by 3 s. A signal inserted between response and outcome improved ratings and detection (Experiments 2 and 4), even when it was contiguous with the response but not the outcome (Experiments 2 and 3). Stimuli associated with both components (marking cues) did not impact judgments or detection (Experiment 3). Stimuli signaling the availability of an outcome if a response was made (signaled reinforcement) did not improve causal judgments, but did improve detection of stimuli associated with the outcome (Experiment 4). Responses during the delay interfered with detection of the actual relationship when delays were unsignaled (Experiments 1-4), but not with fully or briefly signaled delays (Experiments 2-4), or with signaled reinforcement (Experiment 4). The results suggest a delay stimulus serves to signal the response has been successful and demark the delay period by serving a discriminative function. These findings mirror those seen in nonhuman conditioning. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Asunto(s)
Juicio , Humanos , Juicio/fisiología , Masculino , Femenino , Adulto , Adulto Joven , Señales (Psicología) , Adolescente , Causalidad , Factores de Tiempo , Refuerzo en Psicología
2.
Prog Brain Res ; 287: 247-285, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39097355

RESUMEN

BACKGROUND: Previous research has shown that mindfulness is associated with slower passage of time in everyday life, and with lower self-reported time pressure. This study investigates some of the potential mechanisms behind these relationships. METHODS: 318 participants submitted their responses to an online survey which collected data regarding passage of time judgments, time pressure, trait mindfulness, temperament, task load, and metacognitions about time. Using commonality and dominance analyses, we explored how these variables contributed, either alone or jointly, to predicting how fast (or slow) time seems to pass for participants, or how pressed for time they felt. RESULTS: Mindfulness and temperament had some overlaps in their ability to predict passage of time judgments and time pressure for durations at the month and 2-month scales. The temperamental trait of extraversion/surgency, as well as the Non-judging and Non-reacting facets of mindfulness were among the best predictors of passage of time judgments and time pressure. Attention-related variables were mainly related to time perception via their involvement in joint effects with other variables. Results also suggested that metacognitions about time interacted with other variables in predicting passage of time judgments, but only at the month scale. Finally, among all the variables included in this study, task load had the highest degree of involvement in predictions of self-reported time pressure at the week and month scales, but it contributed relatively little to predicting passage of time judgments. CONCLUSIONS: Results suggest that mindfulness relates to passage of time through its involvement in inferential processes. The data also shows how different factors are related to PoTJ at different time scales. Finally, results suggest the existence of both similarities and differences in how passage of time and time pressure relate to the other included variables.


Asunto(s)
Metacognición , Atención Plena , Temperamento , Percepción del Tiempo , Humanos , Masculino , Femenino , Temperamento/fisiología , Metacognición/fisiología , Adulto , Adulto Joven , Percepción del Tiempo/fisiología , Persona de Mediana Edad , Atención/fisiología , Juicio/fisiología , Adolescente , Autoinforme , Encuestas y Cuestionarios
3.
J Vis ; 24(7): 5, 2024 Jul 02.
Artículo en Inglés | MEDLINE | ID: mdl-38975946

RESUMEN

Participants judged affective cooler/warmer gradients around a 12-step color circle. Each pair of adjacent colors was presented twice (left-right reversed), all in random order. Participants readily performed the task, but their settings do not correlate very well. Individual responses were compared with a small number of canonical templates. For a little less than one-half of the participants responses or judgements correlate with such a template. We find a warm pole (in the orange environment) and a cool pole (in the teal environment) connected with two tracks that tend to have one or more gaps or weak, even inverted links. We conclude that the common artistic cool-warm polarity is only weakly reflected in responses of our observers. If it does, the observers apparently use categorical warm and cool poles and may be uncertain in relating adjacent hue steps along the 12-step color circle.


Asunto(s)
Percepción de Color , Estimulación Luminosa , Humanos , Percepción de Color/fisiología , Estimulación Luminosa/métodos , Masculino , Adulto , Femenino , Adulto Joven , Juicio/fisiología
4.
Behav Brain Res ; 471: 115141, 2024 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-38992846

RESUMEN

Individuals with schizophrenia show aberrant processing of social cues. In the current study, we (1) compared trustworthiness ratings of faces between patients with schizophrenia and healthy controls, (2) compared pupillary reactivity between patients and controls (3) examined whether trustworthiness judgments in schizophrenia are related to pupil reactivity, (4) and examined associations between trustworthiness judgements and symptom severity, specifically paranoia. Patients with schizophrenia spectrum disorders (N = 48) and healthy controls (N = 33) completed a Trustworthiness Task, during which their pupil size was measured via an eye-tracking device. The mean baseline-corrected pupil size was calculated from 24 pictures of real neutral faces, each presented for 2500 ms. Self-reported psychotic experiences were measured by Community Assessment of Psychic Functioning (CAPE-42), and symptom severity was rated by Brief Psychiatric Rating Scale (BPRS). No group differences were found in trustworthiness ratings or pupil reactivity parameters during trustworthiness judgments. Separately, among patients, absolute difference in pupil-size change and dilation after reaching minimum size were related to more severe positive symptoms and self-reported paranoia. Our results did not show social cognitive biases in the stable outpatients with schizophrenia, or the role of pupil reactivity in trustworthiness judgments. Future studies should use longer stimuli for pupillary reactivity and control the type and dosage of utilized antipsychotic medication. Further studies are required to explore relationships in larger and more symptomatic groups of patients.


Asunto(s)
Juicio , Pupila , Esquizofrenia , Confianza , Humanos , Masculino , Femenino , Adulto , Esquizofrenia/fisiopatología , Pupila/fisiología , Juicio/fisiología , Persona de Mediana Edad , Psicología del Esquizofrénico , Percepción Social , Reconocimiento Facial/fisiología , Adulto Joven
5.
Sci Rep ; 14(1): 16324, 2024 07 15.
Artículo en Inglés | MEDLINE | ID: mdl-39009697

RESUMEN

Judgments about social groups are characterized by their position in a representational space defined by two axes, warmth and competence. We examined serial dependence (SD) in evaluations of warmth and competence while measuring participants' electroencephalographic (EEG) activity, as a means to address the independence between these two psychological axes. SD is the attraction of perceptual reports towards things seen in the recent past and has recently been intensely investigated in vision. SD occurs at multiple levels of visual processing, from basic features to meaningful objects. The current study aims to (1) measure whether SD occurs between non-visual objects, in particular social groups and (2) uncover the neural correlates of social group evaluation and SD using EEG. Participants' judgments about social groups such as "nurses" or "accountants" were serially dependent, but only when the two successive groups were close in representational space. The pattern of results argues in favor of a non-separability between the two axes, because groups nearby on one dimension but far on the other were not subject to SD, even though that other dimension was irrelevant to the task at hand. Using representational similarity analysis, we found a brain signature that differentiated social groups as a function of their position in the representational space. Our results thus argue that SD may be a ubiquitous cognitive phenomenon, that social evaluations are serially dependent, and that reproducible neural signatures of social evaluations can be uncovered.


Asunto(s)
Encéfalo , Electroencefalografía , Humanos , Masculino , Femenino , Adulto , Encéfalo/fisiología , Adulto Joven , Estereotipo , Juicio/fisiología
6.
Cognition ; 250: 105873, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38986291

RESUMEN

There is considerable evidence linking cognitive reflection with utilitarian judgments in dilemmas that involve sacrificing someone else for the greater good. However, the evidence is mixed on the question of whether cognitive reflection is associated with utilitarian judgments in self-sacrificial dilemmas. We employed process dissociation to extract a self-sacrificial utilitarian (SU) parameter, an altruism (A) parameter, an other-sacrificial (OU) utilitarian parameter, and a deontology (D) parameter. In Study 1, the cognitive reflection test (CRT) positively correlated with both SU and OU (replicated in Studies 2 and 4, pre-registered). In Study 2, we found that instructing participants to rely on reason increased SU and OU (replicated in Study 4, pre-registered). In Study 3, we found that SU and OU positively correlated with giving in the single-game version of the public goods game (replicated in Study 4, pre-registered), which provides behavioral validation that they are genuine moral tendencies. Together, these studies constitute strong cumulative evidence that SU and OU are both valid measures that are associated with reliance on cognitive reflection.


Asunto(s)
Principios Morales , Humanos , Masculino , Adulto , Femenino , Adulto Joven , Modelos Psicológicos , Altruismo , Juicio/fisiología
7.
Cogn Res Princ Implic ; 9(1): 47, 2024 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-39019988

RESUMEN

This paper examines how humans judge the capabilities of artificial intelligence (AI) to evaluate human attributes, specifically focusing on two key dimensions of human social evaluation: morality and competence. Furthermore, it investigates the impact of exposure to advanced Large Language Models on these perceptions. In three studies (combined N = 200), we tested the hypothesis that people will find it less plausible that AI is capable of judging the morality conveyed by a behavior compared to judging its competence. Participants estimated the plausibility of AI origin for a set of written impressions of positive and negative behaviors related to morality and competence. Studies 1 and 3 supported our hypothesis that people would be more inclined to attribute AI origin to competence-related impressions compared to morality-related ones. In Study 2, we found this effect only for impressions of positive behaviors. Additional exploratory analyses clarified that the differentiation between the AI origin of competence and morality judgments persisted throughout the first half year after the public launch of popular AI chatbot (i.e., ChatGPT) and could not be explained by participants' general attitudes toward AI, or the actual source of the impressions (i.e., AI or human). These findings suggest an enduring belief that AI is less adept at assessing the morality compared to the competence of human behavior, even as AI capabilities continued to advance.


Asunto(s)
Inteligencia Artificial , Juicio , Principios Morales , Percepción Social , Humanos , Femenino , Masculino , Adulto , Juicio/fisiología , Adulto Joven , Aptitud/fisiología
8.
Exp Brain Res ; 242(8): 2023-2031, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38953973

RESUMEN

The influence of travel time on perceived traveled distance has often been studied, but the results are inconsistent regarding the relationship between the two magnitudes. We argue that this is due to differences in the lengths of investigated travel distances and hypothesize that the influence of travel time differs for rather short compared to rather long traveled distances. We tested this hypothesis in a virtual environment presented on a desktop as well as through a head-mounted display. Our results show that, for longer distances, more travel time leads to longer perceived distance, while we do not find an influence of travel time on shorter distances. The presentation through an HMD vs. desktop only influenced distance judgments in the short distance condition. These results are in line with the idea that the influence of travel time varies by the length of the traveled distance, and provide insights on the question of how distance perception in path integration studies is affected by travel time, thereby resolving inconsistencies reported in previous studies.


Asunto(s)
Percepción de Distancia , Humanos , Percepción de Distancia/fisiología , Femenino , Masculino , Adulto Joven , Adulto , Factores de Tiempo , Percepción Espacial/fisiología , Realidad Virtual , Juicio/fisiología
9.
Br J Dev Psychol ; 42(3): 409-424, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38923552

RESUMEN

Do children consider temporal distance in their reasoning about the world? Using a novel method that relied minimally on verbal ability, we asked N = 106 3- to 6-year-olds to judge which of two characters felt more 'happy'/'sad' right now: one engaging in a pleasant/unpleasant activity tomorrow or another engaging in this same activity when they are a year older. That is, we examined whether children understood that the closer in time a future event, the more intense the currently felt emotion. Starting at age 4, children correctly judged which child was more 'happy'/'sad' right now. However, 4- to 6-year-olds tended not to explain their judgements by referring to temporal distance, per se. Results suggest that children are sensitive to temporal distance early in development, but do not yet verbally express this understanding. Implications for theories about children's future thinking and future areas of research are discussed.


Asunto(s)
Desarrollo Infantil , Juicio , Humanos , Masculino , Femenino , Niño , Preescolar , Juicio/fisiología , Desarrollo Infantil/fisiología , Percepción del Tiempo/fisiología , Emociones/fisiología , Felicidad
10.
Psychol Res ; 88(5): 1590-1601, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38836875

RESUMEN

When mentally exploring maps representing large-scale environments (e.g., countries or continents), humans are assumed to mainly rely on spatial information derived from direct perceptual experience (e.g., prior visual experience with the geographical map itself). In the present study, we rather tested whether also temporal and linguistic information could account for the way humans explore and ultimately represent this type of maps. We quantified temporal distance as the minimum time needed to travel by train across Italian cities, while linguistic distance was retrieved from natural language through cognitively plausible AI models based on non-spatial associative learning mechanisms (i.e., distributional semantic models). In a first experiment, we show that temporal and linguistic distances capture with high-confidence real geographical distances. Next, in a second behavioral experiment, we show that linguistic information can account for human performance over and above real spatial information (which plays the major role in explaining participants' performance) in a task in which participants have to judge the distance between cities (while temporal information was found to be not relevant). These findings indicate that, when exploring maps representing large-scale environments, humans do take advantage of both perceptual and linguistic information, suggesting in turn that the formation of cognitive maps possibly relies on a strict interplay between spatial and non-spatial learning principles.


Asunto(s)
Juicio , Percepción Espacial , Humanos , Femenino , Adulto , Masculino , Percepción Espacial/fisiología , Adulto Joven , Juicio/fisiología , Italia , Lingüística , Percepción del Tiempo/fisiología
11.
Physiol Behav ; 283: 114602, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-38851442

RESUMEN

Muscle testing is an integral component in assessing musculoskeletal function and tailoring rehabilitation efforts. This study aimed i. to identify an objective evaluation system sensitive to analyze changes in different muscular conditions in different neuromuscular tests across a spectrum of professional experience levels; and ii. to analyze differences in objective parameters and clinical judgment between participants of different levels of expertise in different muscular conditions in different neuromuscular tests. Participants included 60 subjects with Level I to III expertise who performed blinded neuromuscular tests on the middle deltoid and rectus femoris muscles of 40 volunteer subjects. The methodology centered on standardizing test protocols to minimize variability, employing EMG to quantify muscle activity, thermography to capture thermographic muscular response, and digital dynamometry to measure muscular resistance. The findings revealed that while traditional methods like thermography and electromyography provide valuable insights, digital dynamometry stands out for its sensitivity in detecting muscle condition changes in neuromuscular test. Moreover, the data underscored the pivotal role of advanced training and expertise in enhancing the precision and accuracy of neuromuscular diagnostics, since there were significant differences in objective parameters and clinical judgment between participants of different levels of expertise in the different muscular conditions in Middle deltoid and Rectus femoris neuromuscular tests analyzed, presenting higher expertise participant clinical judgment like objective validated instrument.


Asunto(s)
Electromiografía , Humanos , Masculino , Femenino , Adulto , Adulto Joven , Músculo Esquelético/fisiología , Termografía/métodos , Juicio/fisiología , Dinamómetro de Fuerza Muscular
12.
Cognition ; 250: 105790, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38908304

RESUMEN

Rules help guide our behavior-particularly in complex social contexts. But rules sometimes give us the "wrong" answer. How do we know when it is okay to break the rules? In this paper, we argue that we sometimes use contractualist (agreement-based) mechanisms to determine when a rule can be broken. Our model draws on a theory of social interactions - "virtual bargaining" - that assumes that actors engage in a simulated bargaining process when navigating the social world. We present experimental data which suggests that rule-breaking decisions are sometimes driven by virtual bargaining and show that these data cannot be explained by more traditional rule-based or outcome-based approaches.


Asunto(s)
Juicio , Principios Morales , Humanos , Juicio/fisiología , Adulto , Femenino , Masculino , Interacción Social , Adulto Joven , Toma de Decisiones/fisiología , Negociación
13.
Cognition ; 250: 105854, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38941764

RESUMEN

People relish thinking about coincidences-we puzzle over their meanings and delight in conveying our experiences of them to others. But whereas some research has begun to explore how coincidences are represented by adults, little is known about the early development of these representations. Here we explored factors influencing coincidence representations in both adults and children. Across two experiments, participants read stories describing co-occurring events and then judged whether these constituted coincidences. In Experiment 1 we found that adults' coincidence judgments were highly sensitive to the presence or absence of plausible explanations: as expected, adults were more likely to judge co-occurrences as a coincidence when no explanation was available. Importantly, their coincidence judgments were also modulated by the number of events that co-occurred. Adults tended to reject scenarios involving too many co-occurring events as coincidences regardless of whether an explanation was present, suggesting that observing suspiciously many co-occurrences triggered them to infer their own underlying explanation (and thus blocking the events' interpretation as a coincidence). In Experiment 2 we found that 4- to 10-year-old children also represent coincidences, and identify them via the absence of plausible explanations. Older children, like adults, rejected suspiciously large numbers of co-occurring events as coincidental, whereas younger children did not exhibit this sensitivity. Overall, these results suggest that representation of coincidence is available from early in life, but undergoes developmental change during the early school-age years.


Asunto(s)
Desarrollo Infantil , Humanos , Niño , Preescolar , Adulto , Femenino , Masculino , Desarrollo Infantil/fisiología , Adulto Joven , Juicio/fisiología , Adolescente , Factores de Edad , Formación de Concepto/fisiología
14.
Neurosci Lett ; 836: 137861, 2024 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-38849102

RESUMEN

The continued influence effect of misinformation (CIEM) can negatively affect individuals' reasoning and judgment processes. This research aims to enhance the correction of misinformation and foster rational judgement by investigating the internal brain mechanisms involved in the processing of the CIEM through the use of task-based functional magnetic resonance imaging combined with Granger causality analysis. Our findings demonstrate notable effective interactions in varying directions between the left inferior frontal gyrus and middle temporal gyrus during the encoding phase, and between the right anterior cingulate gyrus and left inferior occipital gyrus in the retrieval phase. These insights elucidate the roles of mental model updating and retrieval failure in the processing of CIEM, offering more granular evidence to support the differentiation in processing phases.


Asunto(s)
Encéfalo , Imagen por Resonancia Magnética , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Femenino , Adulto Joven , Adulto , Encéfalo/fisiología , Encéfalo/diagnóstico por imagen , Mapeo Encefálico/métodos , Comunicación , Juicio/fisiología , Vías Nerviosas/fisiología , Vías Nerviosas/diagnóstico por imagen
15.
Hum Nat ; 35(2): 114-133, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38878141

RESUMEN

Humans have undergone a long evolutionary history of violent agonistic exchanges, which would have placed selective pressures on greater body size and the psychophysical systems that detect them. The present work showed that greater body size in humans predicted increased knockout power during combative contests (Study 1a-1b: total N = 5,866; Study 2: N = 44 openweight fights). In agonistic exchanges reflective of ancestral size asymmetries, heavier combatants were 200% more likely to win against their lighter counterparts because they were 200% more likely to knock them out (Study 2). Human dominance judgments (total N = 500 MTurkers) accurately tracked the frequency with which men (N = 516) knocked out similar-sized adversaries (Study 3). Humans were able to directly perceive a man's knockout power because they were attending to cues of a man's body size. Human dominance judgments-which are important across numerous psychological domains, including attractiveness, leadership, and legal decision-making-accurately predict the likelihood with which a potential mate, ally, or rival can incapacitate their adversaries.


Asunto(s)
Tamaño Corporal , Juicio , Predominio Social , Humanos , Masculino , Tamaño Corporal/fisiología , Juicio/fisiología , Adulto , Conducta Competitiva/fisiología , Adulto Joven
16.
Sci Rep ; 14(1): 12629, 2024 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-38824168

RESUMEN

Moral judgements about people based on their actions is a key component that guides social decision making. It is currently unknown how positive or negative moral judgments associated with a person's face are processed and stored in the brain for a long time. Here, we investigate the long-term memory of moral values associated with human faces using simultaneous EEG-fMRI data acquisition. Results show that only a few exposures to morally charged stories of people are enough to form long-term memories a day later for a relatively large number of new faces. Event related potentials (ERPs) showed a significant differentiation of remembered good vs bad faces over centerofrontal electrode sites (value ERP). EEG-informed fMRI analysis revealed a subcortical cluster centered on the left caudate tail (CDt) as a correlate of the face value ERP. Importantly neither this analysis nor a conventional whole-brain analysis revealed any significant coding of face values in cortical areas, in particular the fusiform face area (FFA). Conversely an fMRI-informed EEG source localization using accurate subject-specific EEG head models also revealed activation in the left caudate tail. Nevertheless, the detected caudate tail region was found to be functionally connected to the FFA, suggesting FFA to be the source of face-specific information to CDt. A further psycho-physiological interaction analysis also revealed task-dependent coupling between CDt and dorsomedial prefrontal cortex (dmPFC), a region previously identified as retaining emotional working memories. These results identify CDt as a main site for encoding the long-term value memories of faces in humans suggesting that moral value of faces activates the same subcortical basal ganglia circuitry involved in processing reward value memory for objects in primates.


Asunto(s)
Electroencefalografía , Potenciales Evocados , Imagen por Resonancia Magnética , Principios Morales , Humanos , Imagen por Resonancia Magnética/métodos , Femenino , Masculino , Adulto , Potenciales Evocados/fisiología , Adulto Joven , Núcleo Caudado/fisiología , Núcleo Caudado/diagnóstico por imagen , Mapeo Encefálico/métodos , Cara/fisiología , Memoria/fisiología , Juicio/fisiología
17.
Cogn Res Princ Implic ; 9(1): 37, 2024 Jun 13.
Artículo en Inglés | MEDLINE | ID: mdl-38866984

RESUMEN

We empirically examined the effectiveness of how the Analysis of Competing Hypotheses (ACH) technique structures task information to help reduce confirmation bias (Study 1) and the portrayal of intelligence analysts as suffering from such bias (Study 2). Study 1 (N = 161) showed that individuals presented with hypotheses in rows and evidence items in columns were significantly less likely to demonstrate confirmation bias, whereas those presented with the ACH-style matrix (with hypotheses in columns and evidence items in rows) or a paragraph of text (listing the evidence for each hypothesis) were not less likely to demonstrate bias. The ACH-style matrix also did not confer any benefits regarding increasing sensitivity to evidence credibility. Study 2 showed that the majority of 62 Dutch military analysts did not suffer from confirmation bias and were sensitive to evidence credibility. Finally, neither judgmental coherence nor cognitive reflection differentiated between better or worse performers in the hypotheses evaluation tasks.


Asunto(s)
Juicio , Humanos , Masculino , Femenino , Adulto , Adulto Joven , Juicio/fisiología , Sesgo , Persona de Mediana Edad , Personal Militar
18.
Proc Natl Acad Sci U S A ; 121(25): e2312293121, 2024 Jun 18.
Artículo en Inglés | MEDLINE | ID: mdl-38857385

RESUMEN

The perception of sensory attributes is often quantified through measurements of sensitivity (the ability to detect small stimulus changes), as well as through direct judgments of appearance or intensity. Despite their ubiquity, the relationship between these two measurements remains controversial and unresolved. Here, we propose a framework in which they arise from different aspects of a common representation. Specifically, we assume that judgments of stimulus intensity (e.g., as measured through rating scales) reflect the mean value of an internal representation, and sensitivity reflects a combination of mean value and noise properties, as quantified by the statistical measure of Fisher information. Unique identification of these internal representation properties can be achieved by combining measurements of sensitivity and judgments of intensity. As a central example, we show that Weber's law of perceptual sensitivity can coexist with Stevens' power-law scaling of intensity ratings (for all exponents), when the noise amplitude increases in proportion to the representational mean. We then extend this result beyond the Weber's law range by incorporating a more general and physiology-inspired form of noise and show that the combination of noise properties and sensitivity measurements accurately predicts intensity ratings across a variety of sensory modalities and attributes. Our framework unifies two primary perceptual measurements-thresholds for sensitivity and rating scales for intensity-and provides a neural interpretation for the underlying representation.


Asunto(s)
Percepción , Humanos , Percepción/fisiología , Umbral Sensorial/fisiología , Sensación/fisiología , Juicio/fisiología
19.
Neuroimage ; 296: 120670, 2024 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-38848980

RESUMEN

Humans constantly make predictions and such predictions allow us to prepare for future events. Yet, such benefits may come with drawbacks as premature predictions may potentially bias subsequent judgments. Here we examined how prediction influences our perceptual decisions and subsequent confidence judgments, on scenarios where the predictions were arbitrary and independent of the identity of the upcoming stimuli. We defined them as invalid and non-informative predictions. Behavioral results showed that, such non-informative predictions biased perceptual decisions in favor of the predicted choice, and such prediction-induced perceptual bias further increased the metacognitive efficiency. The functional MRI results showed that activities in the medial prefrontal cortex (mPFC) and subgenual anterior cingulate cortex (sgACC) encoded the response consistency between predictions and perceptual decisions. Activity in mPFC predicted the strength of this congruency bias across individuals. Moreover, the parametric encoding of confidence in putamen was modulated by prediction-choice consistency, such that activity in putamen was negatively correlated with confidence rating after inconsistent responses. These findings suggest that predictions, while made arbitrarily, orchestrate the neural representations of choice and confidence judgment.


Asunto(s)
Imagen por Resonancia Magnética , Metacognición , Corteza Prefrontal , Humanos , Masculino , Femenino , Metacognición/fisiología , Adulto Joven , Adulto , Corteza Prefrontal/fisiología , Corteza Prefrontal/diagnóstico por imagen , Mapeo Encefálico/métodos , Juicio/fisiología , Giro del Cíngulo/fisiología , Giro del Cíngulo/diagnóstico por imagen , Conducta de Elección/fisiología
20.
PLoS One ; 19(6): e0302747, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38857270

RESUMEN

This body image study tests the viability of transferring a complex psychophysical paradigm from a controlled in-person laboratory task to an online environment. 172 female participants made online judgements about their own body size when viewing images of computer-generated female bodies presented in either in front-view or at 45-degrees in a method of adjustment (MOA) paradigm. The results of these judgements were then compared to the results of two laboratory-based studies (with 96 and 40 female participants respectively) to establish three key findings. Firstly, the results show that the accuracy of online and in-lab estimates of body size are comparable, secondly that the same patterns of visual biases in judgements are shown both in-lab and online, and thirdly online data shows the same view-orientation advantage in accuracy in body size judgements as the laboratory studies. Thus, this study suggests that that online sampling potentially represents a rapid and accurate way of collecting reliable complex behavioural and perceptual data from a more diverse range of participants than is normally sampled in laboratory-based studies. It also offers the potential for designing stratified sampling strategies to construct a truly representative sample of a target population.


Asunto(s)
Imagen Corporal , Psicofísica , Humanos , Femenino , Imagen Corporal/psicología , Adulto , Psicofísica/métodos , Adulto Joven , Adolescente , Tamaño Corporal , Percepción Visual/fisiología , Juicio/fisiología , Internet
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