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.     

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.     

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.     

A spatial modality effect in serial memory

In 2 experiments, the authors tested whether the classical modality effect-that is, the stronger recency effect for auditory items relative to visual items-can be extended to the spatial domain. An order reconstruction task was undertaken with four types of material: visual-spatial, auditory-spatial, visual-verbal, and auditory-verbal. Similar serial position curves were obtained regardless of the nature of the to-be-remembered sequences, with the exception that a modality effect was found with spatial as well as with verbal materials. The results are discussed with regard to a number of models of short-term memory.     

Articulatory complexity at item boundaries in serial recall: the case of Welsh and English digit span

The proposition that the difference in memory span between Welsh digits and English digits is accounted for by the longer articulatory duration of Welsh digits is critically reexamined. Two methods of measuring digit duration are contrasted. One is derived from digits spoken in isolation; the other is based on digits spoken in list format. Duration of Welsh digits was greater only when spoken in lists; with isolated production Welsh digits were significantly shorter than English digits. Also, span was shorter for Welsh digits. The results are interpreted in the light of the different articulatory demands made at the junctures between words in the English and Welsh lists. A supplementary experiment, using English words, illustrated that articulatory complexity at item boundaries increased serial recall error.     

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.     

From auditory image to auditory percept: Facilitation through common processes?

Two experiments explored implicit memory for auditory stimuli as measured by a test of perceptual identification. The facilitative effect of perceived auditory primes was contrasted with that of imaged auditory primes. In Experiment 1, there was a significant priming effect from imaged spoken-word primes that did not differ significantly from the level of priming due to perceived spoken-word primes, measured by a test of auditory perceptual identification. There was no facilitation of spoken-word identification following creation of an image of a word’s referent sound. In Experiment 2, identification of an environmental sound was facilitated by prior processing of an imaged sound from the same category, though there was significantly more transfer following processing of the actual sound.     

“It Happens,But I’m Not There”: On the Phenomenology of Childbirth

Human Studies - Phenomenologically grounded research on pregnancy is a thriving area of activity in feminist studies and related disciplines. But what has been largely omitted in this area of...     

When Middle Really Means “Top” or “Bottom”: An Analysis of the 16PF5 Using Bock's Nominal Response Model

When self-report items with a Likert-type scale include a middle response option (e.g., Unsure, Neither agree nor disagree, or ?), this middle option is assumed to measure a level of the trait intermediate between the high and low response categories. In this study, we tested this assumption in the 16 Personality Factor Questionnaire, Version 5 (16PF5) by fitting Bock's nominal response model in the U.S. and UK standardization samples of the 16PF5. We found that in many cases, the middle option was indicative of higher levels of the latent trait than the ostensibly highest response option. In certain other cases, it was indicative of lower levels of the latent trait than the ostensibly lowest response option. This undermines the use of a simple successive integer scoring scheme where responses in adjacent response categories are assigned scores of 0, 1, and 2. Recommendations for alternative scoring schemes are provided. Results also suggested that certain personality traits, especially neurotic traits, are associated with a tendency toward selecting the middle option.