Gummed-up memory: chewing gum impairs short-term recall

Several studies have suggested that short-term memory is generally improved by chewing gum. However, we report the first studies to show that chewing gum impairs short-term memory for both item order and item identity. Experiment 1 showed that chewing gum reduces serial recall of letter lists. Experiment 2 indicated that chewing does not simply disrupt vocal-articulatory planning required for order retention: Chewing equally impairs a matched task that required retention of list item identity. Experiment 3 demonstrated that manual tapping produces a similar pattern of impairment to that of chewing gum. These results clearly qualify the assertion that chewing gum improves short-term memory. They also pose a problem for short-term memory theories asserting that forgetting is based on domain-specific interference given that chewing does not interfere with verbal memory any more than tapping. It is suggested that tapping and chewing reduce the general capacity to process sequences.     

Intersecting Constraints on Label Learning: Effects of Age,Label Properties,and Referential Context

ABSTRACT

This research investigates the development of constraints in word learning. Previous experiments have shown that as infants gain more knowledge of native language structure, they become more selective about the forms that they accept as labels. However, the developmental pattern exhibited depends greatly on the way that infants are introduced to the labels and tested. In a series of experiments, we examined how providing referential context in the form of familiar objects and familiar object names affects how infants learn labels that they would otherwise reject, nonspeech sounds. We found evidence of the development of intersecting constraints: Younger infants (14-month-olds) were more open to learning nonspeech tone labels than older infants (19-month-olds), and younger infants were more open to the influence of referential context. These findings suggest that infants form expectations about labels and labeling contexts as they become more sophisticated learners.     

The body of the other: intercorporeality and the phenomenology of agoraphobia

How is our experience of the world affected by our experience of others? Such is the question I will be exploring in this paper. I will do so via the agoraphobic condition. In agoraphobia, we are rewarded with an enriched glimpse into the intersubjective formation of the world, and in particular to our embodied experience of that social space. I will be making two key claims. First, intersubjectivity is essentially an issue of intercorporeality, a point I shall explore with recourse to Merleau-Ponty’s account of the prepersonal body. The implication of this claim is that evading or withdrawing from the other remains structurally impossible so long as we remain bodily subjects. Second, the necessary relation with others defines our thematic and affective experience of the world. Far from a formal connection with others, the corporeal basis of intersubjectivity means that our lived experience of the world is mediated via our bodily relations with others. In this way, intercorporeality reveals the body as being dynamically receptive to social interactions with others. Each of these claims is demonstrated via a phenomenological analysis of the agoraphobe’s interaction with others. From this analysis, I conclude that our experience of the world is affected by our experience of others precisely because we are in a bodily relation with others. Such a relation is not causally linked, as though first there were a body, then a world, and then a subject that provided a thematic and affective context to that experience. Instead, body, other, and world are each intertwined in a single unity and cannot be considered apart.     

Self-determined immortality: Testing the role of autonomy in promoting perceptions of symbolic immortality and well-being

Motivation and Emotion - This pre-registered work was designed to replicate and extend previous research finding that autonomy is associated with greater extent of belief in symbolic immortality...     

Lay Personality Theories in Interactive Decisions: Strongly Held,Weakly Supported

In interactive decisions, cues to what others will do are important in forming a strategy. Information about others' personalities appears to be potentially valuable for this purpose. We report a series of four studies examining how information about another actor's personality influences people's own choices in interactive decisions. The studies found widespread beliefs that others' personality characteristics are strongly predictive both of broad classes of decision behavior (competition/cooperation, risk‐seeking/risk‐aversion) (Study 1) and of specific choices (Study 2) in single‐agent settings. These beliefs extended to predicting others' choices in interactive decisions (Study 3) and to shaping the predictor's own decisions in interactive play in Chicken and Assurance games (Study 4). Overall, we found extensive evidence that laypeople believe that the personality traits we selected (angry‐hostility, anxiety, assertiveness, excitement‐seeking, and warmth) have substantial effects on behavior in interactive decisions and they act on those beliefs when making their own decisions. The empirical evidence supporting the predictive validity of these traits was, however, quite weak. Copyright © 2014 John Wiley & Sons, Ltd.     

Visual distraction and visuo‐spatial memory: A sandwich effect

The functional characteristics of visuo‐spatial serial memory and its sensitivity to irrelevant visual information are examined in the present study, through the investigation of the sandwich effect (e.g., ). The memory task was one of serial recall for the position of a sequence of seven spatially and temporally separated dots. The presence of irrelevant dots interpolated with to‐be‐remembered dots affected performance over most serial positions (Experiment 1) but that effect was significantly reduced when the interpolated dots were distinct from the to‐be‐remembered dots by colour and shape (Experiment 2). Parallels are made between verbal and spatial serial memory, and the reduction of the sandwich effect is discussed in terms of the contribution of perceptual organisation and attentional factors in short‐term memory.     

Indexicals and utterance production

We highlight various non-standard mechanisms of communication to both motivate our response to what is known as the ‘answering machine paradoxes’ and to shed light on recent variants of these cases. We claim that the most intuitive solution to these paradoxes requires one to distinguish between the agent (of a context), the tokening of a sentence and the agent’s chosen mechanism of communicating this tokening.     

Nonlinear Indicator-Level Moderation in Latent Variable Models

Linear, nonlinear, and nonparametric moderated latent variable models have been developed to investigate possible interaction effects between a latent variable and an external continuous moderator on the observed indicators in the latent variable model. Most moderation models have focused on moderators that vary across persons but not across the indicators (e.g., moderators like age and socioeconomic status). However, in many applications, the values of the moderator may vary both across persons and across indicators (e.g., moderators like response times and confidence ratings). Indicator-level moderation models are available for categorical moderators and linear interaction effects. However, these approaches require respectively categorization of the continuous moderator and the assumption of linearity of the interaction effect. In this article, parametric nonlinear and nonparametric indicator-level moderation methods are developed. In a simulation study, we demonstrate the viability of these methods. In addition, the methods are applied to a real data set pertaining to arithmetic ability.     

Visual distraction and visuo-spatial memory: a sandwich effect

The functional characteristics of visuo-spatial serial memory and its sensitivity to irrelevant visual information are examined in the present study, through the investigation of the sandwich effect (e.g., Hitch, 1975). The memory task was one of serial recall for the position of a sequence of seven spatially and temporally separated dots. The presence of irrelevant dots interpolated with to-be-remembered dots affected performance over most serial positions (Experiment 1) but that effect was significantly reduced when the interpolated dots were distinct from the to-be-remembered dots by colour and shape (Experiment 2). Parallels are made between verbal and spatial serial memory, and the reduction of the sandwich effect is discussed in terms of the contribution of perceptual organisation and attentional factors in short-term memory.     

The phonological store of working memory: is it phonological and is it a store?

The phonological store construct of the working memory model is critically evaluated. Three experiments test the prediction that the effect of irrelevant sound and the effect of phonological similarity each survive the action of articulatory suppression but only when presentation of to-be-remembered lists is auditory, not visual. No evidence was found to support the interaction predicted among irrelevant speech, modality, and articulatory suppression. Although evidence for an interaction among modality, phonological similarity, and articulatory suppression was found, its presence could be diminished by a suffix, which is an acoustic, not a phonological factor. Coupled with other evidence--from the irrelevant sound effect and errors in natural speech--the action attributed to the phonological store seems better described in terms of a combination of auditory-perceptual and output planning mechanisms.