Lateral masking: limitations of the feature interaction account

Recognition performance for a target letter embedded in a string of characters is worse than that for targets presented in isolation. This lateral masking (LM) effect is known to depend on target eccentricity and spacing between target and flankers (Bouma, 1970), indicating that LM arises in early visual processing due to interactions among visual features. The feature interaction account would predict that flankers consisting of similar features produce similar LM effects and that differences in LM produced by different types of flanker diminish with increasing target eccentricity and decreasing spacing. However, in a series of six experiments, this prediction was shown not to be true. Flankers that did not access a higher level code (e.g., pseudoletters or rotated letters) produced more LM than standard letter flankers. Moreover, effects of different flanker types were most pronounced for medium target eccentricities and medium spacings for which recognition performance scores ranged between 40% and 60%.     

Localized attentional interference affects object individuation, not feature detection

Modern theorists conceptualize visual selective attention as a competition between object representations for the control of extrastriate receptive fields, an account supported by the finding that attentional selection of one stimulus can degrade processing of nearby stimuli. In the present study the conditions that produce reciprocal interference between attended stimuli are examined. Each display contained either no, one, or two feature-defined target items among an array of homogeneous distractors. Observers performed two tasks, feature detection and object individuation. The feature-detection task required observers to determine if any targets were present within the display. The object-individuation task required observers to determine if the number of targets was exactly two. Spatially mediated interference between target pairs occurred in the object-individuation task, but had no effect on feature detection. Results suggest that localized interference between attended stimuli occurs only when observers are required to resolve the features of individual objects, consistent with the competitive interaction models of attention.     

Positive mood, attribution, and the illusion of familiarity

We investigated the positivity-cues-familiarity effect and the hypothesis that it is caused by a misattribution of positivity to a sense of familiarity. Participants were put in a positive or neutral mood state, and then either did or did not complete a mood-manipulation check question. Participants then rendered old/new judgments of stimuli to which they allegedly had been subliminally exposed. When participants did not complete the mood-manipulation check question, and thus the source of their affect was unclear, they showed the positivity-cues-familiarity effect: those in a positive mood identified more of the stimuli as old than did those in a neutral mood. However, those who had completed the mood-manipulation check question, and for whom the source of their affect was obvious, did not show the positivity-cues-familiarity effect. These findings support the notion that a misattribution process is responsible for the positivity-cues-familiarity effect.     

Culture, education, and the attribution of physical causality

Two studies investigated the impact of culturally instilled folk theories on the perception of physical events. In Study 1, Americans and Chinese with no formal physics education were found to emphasize different causes in their explanations for eight physical events, with Americans attributing them more to dispositional factors (e.g., weight) and less to contextual factors (e.g., a medium) than did Chinese. In Study 2, Chinese Americans' identity as Asians or as Americans was primed before having them explain the events used in Study 1. Asian-primed participants endorsed dispositional explanations to a lesser degree and contextual explanations to a greater degree than did American-primed participants, although priming effects were observed only for students with little physics education. Together, these studies suggest that culturally instilled folk theories of physics produce cultural differences in the perception of physical causality.     

Cognitive tuning,encoding, and the attribution of causality

Subjects were given a transmission or reception set before or after viewing a videotape of an event which involved an extreme outcome. The results indicated that transmitters made relatively extreme attributions to plausible causal agents when the set was given prior but not subsequent to viewing the event. The results also showed that subjects who had been given a transmission set before viewing the videotape exhibited relatively high recognition of aspects of the event they observed. It is suggested that the data provide support for an encoding interpretation of transmission-reception differences in the attribution of causality.     

Repetition priming in visual search: Episodic retrieval,not feature priming

Previous research has shown that when the targets of successive visual searches have features in common, response times are shorter. However, the nature of the representation underlying this priming and how priming is affected by the task remain uncertain. In four experiments, subjects searched for an odd-sized target and reported its orientation. The color of the items was irrelevant to the task. When target size was repeated from the previous trial, repetition of target color speeded the response. However, when target size was different from that in the previous trial, repetition of target color slowed responses, rather than speeding them. Our results suggest that these priming phenomena reflect the same automatic mechanism as the priming of pop-out reported by Maljkovic and Nakayama (1994). However, the crossover interaction between repetition of one feature and another rules out Maljkovic and Nakayama's (1994) theory of independent potentiation of distinct feature representations. Instead, we suggest that the priming pattern results from contact with an episodic memory representation of the previous trial.     

Auditory attentional blink: masking the second target is necessary, delayed masking is sufficient.

When two target items (T1 and T2) are presented in rapid succession among fillers, processing T2 is often impaired. This phenomenon is known as the attentional blink (AB). Within the visual modality, this second-target deficit generally occurs only if T2 is masked by a trailing item. The current study was designed to examine whether masking of T2 also plays a critical role in the auditory AB. Results showed a reliable AB effect even when the item following T2 was replaced by silence. However, the AB deficit was abolished when T2 was the last presented stimulus. Our results suggest that, as in vision, T2 masking is necessary for the AB to take place in audition, but that masking is effective even when delayed, providing evidence that the phenomenon shares some functional mechanisms across sensory modalities.     

Focus of attention,self-esteem,and the attribution of causality

An experiment was conducted to investigate how actors' attributions of causality are affected by their expectancy about the outcome of an action and their observation of the actual outcome while in a state of high or low objective self-awareness. In the presence or absence of a camera, subjects delivered therapeutic instructions which were expected to have a positive or a negative effect and which resulted in a positive or a negative effect on a supposedly phobic patient. Principal findings were that (1) attributions to self were greater under high objective self-awareness for positive relative to negative outcomes, (2) attributions to the patient were relatively great under high objective self-awareness when a positive outcome was expected but a negative outcome actually occurred. The results are discussed in terms of the joint role of focus of attention and self-esteem processes in the attribution of causality and in terms of their relationship to Duval and Wicklund's (1973) “focus of attention” attributional analysis.     

Learned helplessness, depression, and the attribution of failure.

Depressed and nondepressed college students received experience with solvable, unsolvable, or no discrimination problems. When later tested on a series of patterned anagrams, depressed groups performed worse than nondepressed groups, and unsolvable groups performed worse than solvable and control groups. As predicted by the learned helplessness model of depression, nondepressed subjects given unsolvable problems showed anagram deficits parallel to those found in naturally occurring depression. When depressed subjects attributed their failure to the difficulty of the problems rather than to their own incompetence, performance improved strikingly. So, failure in itself is apparently not sufficient to produce helplessness deficits in man, but failure that leads to a decreased belief in personal competence is sufficient.     

Backward masking, the suffix effect, and preperceptual storage

This article considers the use of auditory backward recognition masking (ABRM) and stimulus suffix experiments as indexes of preperceptual auditory storage. In the first part of the article, two ABRM experiments that failed to demonstrate a mask disinhibition effect found previously in stimulus suffix experiments are reported. The failure to demonstrate mask disinhibition is inconsistent with an explanation of ABRM in terms of lateral inhibition. In the second part of the article, evidence is presented to support the conclusion that the suffix effect involves the contributions of later processing stages and does not provide an uncontaminated index of preperceptual storage. In contrast, it is claimed that ABRM experiments provide the most direct index of the temporal course of perceptual recognition. Partial-report tasks and other paradigms are also evaluated in terms of their contributions to an understanding of preperceptual auditory storage. Differences between interruption and integration masking are discussed along with the role of preperceptual auditory storage in speech perception.     

Local intracortical circuitry not only for feature binding but also for rapid neuronal responses

Neurons of primary sensory cortices are known to have specific responsiveness to elemental features. To express more complex sensory attributes that are embedded in objects or events, the brain must integrate them. This is referred to as feature binding and is reflected in correlated neuronal activity. We investigated how local intracortical circuitry modulates ongoing-spontaneous neuronal activity, which would have a great impact on the processing of subsequent combinatorial input, namely, on the correlating (binding) of relevant features. We simulated a functional, minimal neural network model of primary visual cortex, in which lateral excitatory connections were made in a diffusive manner between cell assemblies that function as orientation columns. A pair of bars oriented at specific angles, expressing a visual corner, was applied to the network. The local intracortical circuitry contributed not only to inducing correlated neuronal activation and thus to binding the paired features but also to making membrane potentials oscillate at firing-subthreshold during an ongoing-spontaneous time period. This led to accelerating the reaction speed of principal cells to the input. If the lateral excitatory connections were selectively (instead of “diffusively”) made, hyperpolarization in ongoing membrane potential occurred and thus the reaction speed was decelerated. We suggest that the local intracortical circuitry with diffusive connections between cell assemblies might endow the network with an ongoing subthreshold neuronal state, by which it can send the information about combinations of elemental features rapidly to higher cortical stages for their full and precise analyses.     

Psychological causality in the attribution of responsibility for rape

According to a legal model of the attribution of responsibility for rape, judgments of physical and psychological causality of an alleged rapist are combined into overall evaluations of attacker responsibility. It was hypothesized that observers evaluate psychological causality by reconstructing the thought patterns of the accused rapist and by classifying this mental activity along dimensions of responsibility. Subjects read crime briefs, rated dimensions of responsibility, and assigned sentences. Factor analysis and analyses of variance indicate that observers organize psychological causality of the rapist around dimensions of intended violence, and the extent to which the attacker's thoughts are attributable to the victim. Multivariate analysis of variance confirmed the expected effects of the attacker's thoughts on judgments of culpability.This research was supported by a St. Louis University Beaumont Grant. The authors wish to express their gratitude to Kevin Wayne for assisting in data collection and analysis. A special thank you is extended to Audrey Feldman, who reviewed an earlier draft of this paper.     

Actors,observers, and the attribution process: Toward a reconceptualization

Jones and Nisbett hypothesize that actors attribute their actions to situational requirements whereas observers attribute the same actions to personal dispositions. This hypothesis is critically examined and a reconceptualization is proposed. Our conceptual analysis focuses on the attributional consequences of differences between actors and observers in: (a) availability of information about the contemporary and historical determinants of the actor's behavior, and (b) susceptibility to possible motivational distortions and cognitive biases. The relationship between this formulation and Jones and Nisbett's analysis of differences between self-perception and interpersonal perception is discussed.     

Causal attribution, cognitive interference, and the generalization of learned helplessness

We assessed the role of off-task cognitions in mediating the performance effects of global and specific attributions for failure. In Experiment 1, subjects were divided into global and specific attributors and were exposed to either no feedback or failure feedback. In Experiment 2, subjects were exposed to no feedback or to unsolvable problems wherein they received attribution for failure to specific or global causes. Experiment 3 added a condition in which subjects were restrained from engaging in off-task cognitions. Results showed that exposure to unsolvable problems deteriorated performance and increased off-task cognitions mainly among subjects who attributed failure to global causes. In addition, the enhancement of off-task cognitions interfered with performance following unsolvable problems. The introduction of instructions that discouraged subjects from engaging in off-task cognitions eliminated the detrimental effects of global attribution. Results are discussed in terms of test anxiety and excuse-making conceptualizations of learned helplessness.     

Regional variation in the inversion effect for faces: differential effects for feature shape, feature configuration, and external contour

Faces are perceived via an orientation-dependent expert mechanism. We previously showed that inversion impaired perception of the spatial relations of features more in the lower face than in the (more salient) upper face, suggests a failure to rapidly process this type of structural data from the entire face. In this study we wished to determine if this interaction between inversion and regional salience, which we consider a marker for efficient whole-face processing, was specific to second-order (coordinate) spatial relations or also affected other types of structural information in faces. We used an oddity paradigm to test the ability of seventeen subjects to discriminate changes in feature size, feature spatial relations, and external contour in both the upper and lower face. We also tested fourteen subjects on perception of two different types of spatial relations: second-order changes that create plausible alternative faces, and illegal spatial changes that transgress normal rules of facial geometry. In both experiments we examined for asymmetries between upper-face and lower-face perceptual accuracy with brief stimulus presentations. While all structural changes were less easily discerned in inverted faces, only changes to spatial relations showed a marked asymmetry between the upper and lower face, with far worse performance in the mouth region. Furthermore, this asymmetry was found only for second-order spatial relations and not illegal spatial changes. These results suggest that the orientation-dependent face mechanism has a rapid whole-face processing capacity specific to the internal second-order (coordinate) spatial relations of facial features.     

Something in the way we move: Motion dynamics, not perceived sex, influence head movements in conversation

During conversation, women tend to nod their heads more frequently and more vigorously than men. An individual speaking with a woman tends to nod his or her head more than when speaking with a man. Is this due to social expectation or due to coupled motion dynamics between the speakers? We present a novel methodology that allows us to randomly assign apparent identity during free conversation in a video-conference, thereby dissociating apparent sex from motion dynamics. The method uses motion-tracked synthesized avatars that are accepted by naive participants as being live video. We find that 1) motion dynamics affect head movements but that apparent sex does not; 2) judgments of sex are driven almost entirely by appearance; and 3) ratings of masculinity and femininity rely on a combination of both appearance and dynamics. Together, these findings are consistent with the hypothesis of separate perceptual streams for appearance and biological motion. In addition, our results are consistent with a view that head movements in conversation form a low level perception and action system that can operate independently from top-down social expectations.     

Structural models for the mediation of salience effects on attribution

Previous research has demonstrated that salient information is overrepresented in causal attributions. Two experiments were conducted to investigate potential mediators for this effect and to make a case for the use of structural models in explanations of process. Two mediators were considered: enhanced visual recall of salient stimuli and exaggerated schema-relevant recall of salient stimuli. Although analyses of variance supported the visual recall model, structural analyses demonstrated its implausibility. Analyses of variance and structural models revealed that schema-relevant recall, that is, information seen as representative of causal influence, is a plausible mediator; this was particularly true of relevant visual information. Results suggest that salience effects (S. E. Taylor & S. T. Fiske in L. Berkowitz (Ed.), Advances in experimental social psychology (Vol. 11). New York: Academic Press, 1978) are due to: (a) the attentional advantage of inherently salient visual events and (b) the influence of stored visual and nonvisual schema-relevant information on causal judgments.     

Hedonic value of intentional action provides reinforcement for voluntary generation but not voluntary inhibition of action

Intentional inhibition refers to stopping oneself from performing an action at the last moment, a vital component of self-control. It has been suggested that intentional inhibition is associated with negative hedonic value, perhaps due to the frustration of cancelling an intended action. Here we investigate hedonic implications of the free choice to act or inhibit. Participants gave aesthetic ratings of arbitrary visual stimuli that immediately followed voluntary decisions to act or to inhibit action. We found that participants for whom decisions to act produced a strong positive hedonic value for the immediately following visual stimulus made more choices to act than those with weaker hedonic value for action. This finding is consistent with reinforcement learning of action decisions. However, participants who experienced inhibition as generating more positive hedonic value did not choose to inhibit more than other participants. Thus, voluntary inhibition of action did not act as reinforcement for future inhibitory behaviour. Our finding that inhibition of action lacks motivational capacity may explain why self-control is both difficult and limited.