Investigating the Granularity of the Undo Function in Human-Computer Interfaces

Cet article présente trois expériences sur la granularité de la fonction défaire dans les interfaces humain-ordinateur. Les deux premières identifient et analysent les attentes des utilisateurs à propos de la granularité de la fonction défaire dans une tâche de traitement de texte et dans une tâche de dessin. La troisième est plus spécifique et porte sur les attentes des utilisateurs quant à la façon de défaire différentes catégories d'actions dans une tâche de dessin. Les résultats montrent qu'il existe des différences individuelles majeures dans les stratégies utilsées pour défaire, que I'on doit tenir compte des catégories d'actions dans la définition de la granularité de défaire et que les utilisateurs s'attendent à ce que presque toutes les sortes d'actions soient défaisables.
This paper presents three experiments on the granularity of the undo function in user-computer interfaces. The first two identify and analyse user expectations about the grain of undo in a word processing task and in a graphics task. The third one is more specific and tests how users expect different categories of actions to be undone in a graphics task. The results show that there are major individual differences in undo strategies, that action categories must be taken into account when defining undo granularity, and that users expect almost all kinds of actions to be undoable.     

Repeated Effects of Vigorous Interval Training in Basketball,Running-Biking,and Boxing on the Physical Self-Perceptions of Obese Adolescents

This study aims to examine the repeated effects of three sessions of vigorous interval training (VIT) in basketball, running-biking, and boxing on the physical self-perceptions (PSP) of obese adolescents participating in a dietary program. A sample of 24 obese adolescents performed the consecutive VIT sessions every week for 5 weeks. PSP were measured immediately after each training session. Analyses of covariance were used to examine changes in PSP. The results showed rapid and constant increases in PSP with significant differences according to sex, time, type of VIT, and an interaction of sex by time by type of VIT, mainly for basketball.     

The Social Regulation of Classroom Performances: a Theoretical Outline

Based on 20 years of research on the social regulation of academic performances, this paper provides arguments for the idea that the social context in which cognitive functioning takes place is an integral part of that functioning, not just the surrounding context for it. Several studies in the classroom setting indeed reveal that student's cognitive performances can depend on interactions between their actual and past social experiences, most notably interpersonal comparison and evaluation episodes. Because of their recurrence, these episodes can become part of student's autobiographical memory and, therefore, can affect their actual behavior in specific conditions. Theoretical suggestions are made for a ‘social psychology of cognition.’ This revised version was published online in August 2006 with corrections to the Cover Date.     

Blinded by trust in close others: Examining the effect of social closeness on cooperative behaviors during the COVID-19 pandemic

In the context of public health crises such as the COVID-19 pandemic, it is essential that individuals cooperate by complying with preventive measures (e.g., wearing a mask). The current research examines how high trust in close others is linked to less cooperation—that is, less compliance with measures—and thus, undermines collective interests. Specifically, we test whether individuals are less willing to comply with preventive measures when interacting with close others they trust. We conducted two experiments in which participants read a vignette depicting a social interaction with either close others (e.g., family) or strangers. Participants had to report the extent to which they would (1) trust the other people in the situation and (2) comply with the mask wearing and physical distancing measures during this interaction. In both experiments, we find that when individuals are considering an interaction with close others, they report experiencing higher trust which is then linked to lower compliance with preventive measures. In Experiment 2, we further demonstrate that participants report less compliance with preventive measures around close others, even when they perceive non-compliance with the measures as morally “wrong”. Our findings shed light on the challenges that compliance with preventive measures poses during social interactions in a context of high trust.     

Remaking memories: reconsolidation updates positively motivated spatial memory in rats

There is strong evidence that reactivation of a memory returns it to a labile state, initiating a restabilization process termed reconsolidation, which allows for updating of the memory. In this study we investigated reactivation-dependent updating using a new positively motivated spatial task in rodents that was designed specifically to model a human list-learning paradigm. On Day 1, rats were trained to run to three feeders (List 1) for rewards. On Day 2, rats were trained to run to three different feeders (List 2) in either the same (Reminder condition) or a different (No Reminder condition) experimental context than on Day 1. On Day 3, rats were cued to recall List 1. Rats in the Reminder condition made significantly more visits to List 2 feeders (intrusions) during List 1 recall than rats in the No Reminder condition, indicating that the reminder triggered reactivation and allowed integration of List 2 items into List 1. This reminder effect was selective for the reactivated List 1 memory, as no intrusions occurred when List 2 was recalled on Day 3. No intrusions occurred when retrieval took place in a different context from the one used at encoding, indicating that the expression of the updated memory is dependent upon the retrieval context. Finally, the level of intrusions was highest when retrieval took place immediately after List 2 learning, and generally declined when retrieval occurred 1-4 h later, indicating that the List 2 memory competed with short-term retrieval of List 1. These results demonstrate the dynamic nature of memory over time and the impact of environmental context at different stages of memory processing.     

The expression of uncertainty: Two contextual effects

Abstract

Since Foley (1959), the technique of evaluating common expressions of uncertainty on a numerical scale has often been used in an attempt to define such expressions more accurately. Two contextual factors - (1) the composition of the set of expressions and (2) the definition of the scale - were studied in the present experiment to determine their effect on bow such expressions are encoded. Psychophysical theories on series effects and, in particular, the range-frequency model (Parducci, 1983), predict that the composition of a set is one of the determining factors of contrast effects. The scale definition factor determines the lower limit of the rating scale, which represents either uncertainty or negative certainty. The effect of this factor is assumed to depend upon the reference universe outlined in the problem statement and, in particular, upon whether that universe is strictly limited or not. An experiment was conducted to contrast two sets of expressions, two scale definitions and two ways of presenting the problem (the doubt was applied either to a choice of two events or to the occurrence of an event in an unspecified universe). The results provide evidence of a set composition effect and an interaction between the scale definition and the presentation of the problem. This is consistent with the proposed model, which accounts for the specific effects of the judgement task while eliminating the need to consider the variability of the meanings themselves. Proposals for developing this line of research are presented in the discussion.     

Cognitive-neuropsychological function in chronic physical aggression and hyperactivity

Histories of violence and of hyperactivity are both characterized by poor cognitive-neuropsychological function. However, researchers do not know whether these histories combine in additive or interactive ways. The authors tested 303 male young adults from a community sample whose trajectories of teacher-rated physical aggression and motoric hyperactivity from kindergarten to age 15 were well defined. No significant interaction was found. In a 1st model, both histories of problem behavior were independently associated with cognitive-neuropsychological function in most domains. In a 2nd model controlling for IQ, general memory, and test motivation, the 3 working-memory tests (relevant to executive function) remained associated with physical aggression, and 1 remained associated with hyperactivity. These results support an additive model.     

Neurological basis of language and sequential cognition: evidence from simulation,aphasia, and ERP studies

The current research addresses the hypothesis that certain aspects of sequential cognition have made substantial contributions to the human language processing capability, from a functional neurophysiology perspective. We first describe a cognitive sequence processing model that was developed based on the functional neuroanatomy of primate cortex and basal ganglia. We demonstrate how this model is capable of simulating the behavior of human infants in extracting serial, temporal and abstract structure from language-like sound sequences as revealed in recent psycholinguistic experiments. We then demonstrate how, through training, this model can perform adult level syntactic comprehension, based on dissociated processing streams for open vs. closed class words. The model subsequently predicts: (1) that impaired syntactic processing (as in agrammatic aphasia) will be associated with impairments in corresponding non-linguistic cognitive sequencing tasks, and (2) that neurophysiological processes (as revealed by ERPs) involved in syntactic processing should also be involved in the corresponding non-linguistic cognitive sequencing tasks. Data confirming these predictions are reviewed. We conclude that the study of sequential cognition will provide a new paradigm for the investigation of the neurophysiological bases of language.     

Performance feedback and self-focused attention in the classroom: When past and present interact

An experiment tested the impact of performance feedback on self-focused attention in high and low achievers. On the basis of previous research, which suggested that inconsistent feedback (i.e., feedback which contradicts one's performance history) receives considerable attention, it was predicted that such feedback would increase self-focus regardless of its valence (i.e., positive or negative). As predicted, high achievers were more self-focused when receiving failure feedback than when receiving success feedback or no feedback. The low achievers were more self-focused when receiving success feedback than when receiving failure feedback or no feedback. These findings are discussed in relation to Kluger and DeNisi's (1996) Feedback intervention theory and the literature on self-focused attention.     

Social presence effects in the Stroop task: further evidence for an attentional view of social facilitation

In contrast with R. B. Zajonc's (1965) classic view about social facilitation-inhibition (SFI) effects, it was found that the presence of relatively unpredictable audiences and forced social comparison with a slightly superior coactor both facilitated performance in the Stroop task while inhibiting automatic verbal processing. Not only do these findings reveal that social presence can help inhibit the emission of dominant responses, providing further support for an attentional view of SFI effects, but they also demonstrate the power of social situations over what has been thought to be invariant automatic processing. As such, they are inconsistent with the view reiterated in more than 500 articles on Stroop interference over the past 60 years and suggest that more attention should be paid to the situations in which cognition takes place.