An electrophysiological study of attention capture by salience: Does rarity enable capture?

Several behavioural studies have suggested that rarity is critical for enabling irrelevant, salient objects to capture attention. We tested this hypothesis using the N2pc thought to reflect attentional allocation. A cue display was followed by a target display in which participants identified the letter in a specific colour. Experiment 1 pitted rare, irrelevant abrupt onset cues (appearing on only 20% of trials) against target-relevant colour cues. The relevant colour cue produced large N2pc and cue validity effects even when competing with a rare, salient, simultaneous abrupt onset. Similar results occurred even when abrupt onset frequency was reduced to only 10% of trials (Experiment 2). Experiment 3 examined rare, irrelevant colour singleton cues (20% of trials). Despite being rare and salient, these singleton cues produced no N2pc or cue validity effect indicating little attentional capture. Experiment 4 greatly increased colour cue salience by adding four background boxes, increasing colour contrast and tripling the cue display duration (from 50 to 150 ms). Small cue validity and N2pc effects were obtained, but did not strongly depend on degree of rarity (20% vs. 100%). We argue that rarity by itself is neither necessary nor sufficient to produce attention capture.     

Attentional spreading in object-based attention: The roles of target–object integration and target presentation time

What is the best account to explain the object-based attentional benefit—that is, the spread of attention within an attended object or prioritization of search across possible target locations within an attended object? Using a task in which the location of the target was known with certainty, in the present study we systematically manipulated the type (letters or bites) and the presentation time (long or short) of the target and flankers in order to test the effects of target–object integration and target presentation time on object-based attention. The results showed that an object-based effect could appear when the target was a bite, no matter whether the target presentation time was long or short; but when the target was a letter, an object-based effect was only observed when the target presentation time was short enough. These findings provide additional evidence supporting the argument of attentional spreading in object-based attention. However, this spreading is moderated jointly by target–object integration and the target presentation time.     

The formation of novel social category conjunctions in working memory: A possible role for the episodic buffer?

Recent research (e.g., Hutter, Crisp, Humphreys, Waters, &; Moffit; Siebler) has confirmed that combining novel social categories involves two stages (e.g., Hampton; Hastie, Schroeder, &; Weber). Furthermore, it is also evident that following stage 1 (constituent additivity), the second stage in these models involves cognitively effortful complex reasoning. However, while current theory and research has addressed how category conjunctions are initially represented to some degree, it is not clear precisely where we first combine or bind existing social constituent categories. For example, how and where do we compose and temporarily store a coherent representation of an individual who shares membership of “female” and “blacksmith” categories? In this article, we consider how the revised multi-component model of working memory (Baddeley) can assist in resolving the representational limitations in the extant two-stage theoretical models. This is a new approach to understanding how novel conjunctions form new bound “composite” representations.     

A modulatory effect of male voice pitch on long-term memory in women: evidence of adaptation for mate choice?

From a functionalist perspective, human memory should be attuned to information of adaptive value for one’s survival and reproductive fitness. While evidence of sensitivity to survival-related information is growing, specific links between memory and information that could impact upon reproductive fitness have remained elusive. Here, in two experiments, we showed that memory in women is sensitive to male voice pitch, a sexually dimorphic cue important for mate choice because it not only serves as an indicator of genetic quality, but may also signal behavioural traits undesirable in a long-term partner. In Experiment 1, we report that women’s visual object memory is significantly enhanced when an object’s name is spoken during encoding in a masculinised (i.e., lower-pitch) versus feminised (i.e., higher-pitch) male voice, but that no analogous effect occurs when women listen to other women’s voices. Experiment 2 replicated this pattern of results, additionally showing that lowering and raising male voice pitch enhanced and impaired women’s memory, respectively, relative to a baseline (i.e., unmanipulated) voice condition. The modulatory effect of sexual dimorphism cues in the male voice may reveal a mate-choice adaptation within women’s memory, sculpted by evolution in response to the dilemma posed by the double-edged qualities of male masculinity.     

Reversing the picture superiority effect: A speed—accuracy trade-off study of recognition memory

Speed-accuracy trade-off methods have been used to contrast single- and dual-process accounts of recognition memory. With these procedures, subjects are presented with individual test items and required to make recognition decisions under various time constraints. In three experiments, we presented words and pictures to be intentionally learned; test stimuli were always visually presented words. At test, we manipulated the interval between the presentation of each test stimulus and that of a response signal, thus controlling the amount of time available to retrieve target information. The standard picture superiority effect was significant in long response deadline conditions (i.e., > or = 2,000 msec). Conversely, a significant reverse picture superiority effect emerged at short response-signal deadlines (< 200 msec). The results are congruent with views suggesting that both fast familiarity and slower recollection processes contribute to recognition memory. Alternative accounts are also discussed.     

The wrath of Ajax: A psychoanalytic study of Elizabethan discourse— The case of Harrington’s metamorphosis

Sir John Harington’s irreverent and iconoclastic Metamorphosis is subjected to the psychobiographic method of inquiry. The author is first analyzed in the context of his environment and his personality structure. The volume is shown to yield several distinct thematic foci: waste as a product, with its attributions of prurience, omnipotence, divinity, and evil; the eliminatory process and its prominence in life; and the jakes as a locale which is intrinsically related to power, vulnerability, and thanatos. Each of these themes is pursued in a synthesis of psychoanalysis, text analysis, and historical context. The study yields a poignant profile of a valiant challenge to taboo, while revealing the basic dynamics of a rigid and rule-moribund culture.     

The effects of ageing and divided attention on the self-reference effect in emotional memory: Spontaneous or effortful mnemonic benefits?

The self-reference effect (SRE) is a powerful memory advantage associated with encoding in reference to the self (e.g., Rogers, Kuiper, & Kirker, 1977). To explore whether this mnemonic benefit occurs spontaneously, the current study assessed how ageing and divided attention affect the magnitude of the SRE in emotional memory (i.e., memory for emotional stimuli). The sample included a young Full Attention group (young-FA), a young Divided Attention group (young-DA), and an older adult group. The division of attention was manipulated at encoding where participants incidentally studied positive, negative, and neutral trait adjectives in either a self-reference (i.e., rating how well each word describes themselves) or an other-reference condition (i.e., rating how well each word describes another person). Memory for these words was assessed with both recall and recognition tasks. The results from both tasks demonstrated equivalent SRE for all three groups across emotional valence categories of stimuli, suggesting that the SRE is a spontaneous, effortless, and robust effect in memory.     

The nature of working memory gating in Parkinson’s disease: A multi-domain signal detection examination

Distractions are ubiquitous; our brains are inundated with task-irrelevant information. Thus, to remember successfully, one must actively maintain relevant information and prevent distraction from entering working memory. Researchers suggest the basal ganglia-prefrontal pathways are vital to this process by acting as a working memory gate. Using Parkinson’s disease as a model of frontostriatal functioning and with signal detection analyses, the present study aims to better characterize the contribution of frontostriatal pathways of this gating process and to determine how it operates across multiple domains. To achieve this, Parkinson’s disease patients and healthy controls completed verbal and spatial working memory tasks consisting of three conditions: low-load without distraction; low-load with distraction; and high-load without distraction. Patients were tested both ON and OFF dopaminergic medication, allowing for assessment of the contribution of dorsal and ventral frontostriatal pathways. The results demonstrate that when medication is withheld, Parkinson’s patients have a response bias to answer “NO” across all conditions and domains, supporting our hypothesis that the basal ganglia-prefrontal pathways allow or prevent updates of working memory. Contrastingly, medication status affects d′ in the distraction condition but not in the high- or low-load conditions. We attribute this to stimulus valuation processes that were impaired by dopaminergic medication overdosing the ventral pathway. These findings are both consistent with the hypothesis that the working memory gate filters spatial and verbal information before it enters into the working memory system, adding support for the gate being a domain-general mechanism of the central executive.     

The structured representation of information in long-term memory: A possible explanation for the accomplishments of “idiots savants”

Traditional accounts of the “idiot savant”—the development of a superior skill in otherwise subnormal individuals—are challenged through the examination of two cases, a pair of twins with extraordinary numerical ability but otherwise moronic, and Nadia, an autistic girl with extraordinary drawing ability. It is suggested that these phenomenal but particular skills are due to the functional reallocation of representational space in long-term memory. The hierarchical schematic organization of the mnemonic space, normally used for a range of conventional skills such as language, is employed instead for the hypertrophy of one-particular skill. What may appear to be feats of rapid calculation or artistic creativity actually represent automatic routings through long-term memory and translation into motor activity, possibly attributable to an unorthodox context of socialisation and social interaction. Evidence from such cases therefore proves to be inconclusive with regard to determining the nature of intelligence.     

The snake in the mandala: dialogical aspects of Jung’s ‘A study in the process of individuation’

Jung’s study centres on the amplification of pictures painted by a woman patient and posits their sequence as evincing the initial stages of the individuation process. His text performs a dialogue with its audience whereby Jung persuades us of this truth, and also reveals Jung’s dialogue with his patient and with his own ideas. The present paper revisits the clinical material first with a focus on the interaction between Jung and his patient. The second part compares the 1940 and 1950 versions of Jung’s study with attention to tensions that traverse them, such as Jung’s attitude to the animus and his two voices as a practitioner and a theorist.     

The effects of presentation rate and retention interval on memory for items and associations in younger adults: A simulation of older adults’ associative memory deficit

Older adults show an associative deficit in episodic memory compared to younger adults. Previous research suggests both strategic and automatic binding deficits contribute to older adults’ poorer memory performance. Using behavioral manipulations designed to affect strategic and automatic binding of associations, three experiments attempted to simulate an associative deficit in younger adults. In these experiments participants learned face-scene pairs and then were given item and associative recognition memory tests. We manipulated the time allotted at encoding and retrieval to simulate strategic deficits, and the length of the retention interval to simulate automatic deficits. Results indicate that both manipulations separately contribute to a differential decline in associative memory, similar to the one shown by older adults, especially as reflected in the differential increase in false alarm rate in the associative memory test more than in the item memory test. Considerations of possible underlying brain mechanisms are discussed.     

The measurement of left—right asymmetries in the Simon effect: A fine-grained analysis

The spatial Simon effect is often asymmetric, being greater on one side than on the other. To date, not much attention has been paid to these asymmetries, and explanations of the Simon effect do not take them into account. In the present article, we attempt to clarify the statistical implications of the asymmetries so as to provide a useful tool for future empirical investigation. Starting with examples from our laboratory and previous well-known studies, we point out the consequences of ignoring the asymmetries in the Simon effect. We suggest an alternative data analysis that might render the results clearer. Finally, through a comparison of left- and right-handed subjects, we demonstrate that asymmetries in the Simon effect are linked to the lateralization of processes involved in the Simon task—that is, attention and response selection. This approach provides a strong argument against collapsing data from the two sides to measure the Simon effect.     

Assessing declarative memory in 12-month-old infants: A test – retest reliability study of the deferred imitation task

This study examined whether declarative memory in infants can be reliably assessed using the deferred imitation task. Twenty-four infants at the age of 12 months were given the same deferred imitation task twice within a short period of time (week-to-week assessment). Replicating the results of former studies the second memory test yielded better memory performances on the group level than the first one, indicating a memory benefit as is typically found in older children as well as in adults. Stability of memory performance level was analysed using two indicators, namely test – retest correlations assessing stability of individual memory performances for the whole sample, as well as corrected test – retest correlations using individual consistency scores. Test – retest reliability was highly significant (r = .52, p = .009), as well as corrected test – retest reliability (r = .62, p = .001), thus demonstrating that the individual memory performance level in infants can reliably be assessed using the deferred imitation task.     

A follow-up to “Scale Effects in Memory for the Time of Events”: The earthquake study

This study is a follow-up to Friedman and Wilkins’s (1985) experiments on memory for the time of past events. That research showed that judgments of the time of past news events are often more accurate on finer than on grosser time scales. This finding is consistent with a reconstructive model but troublesome for models emphasizing judgments of the age of a memory. The present study was designed to control for the possibility that scale differences in Friedman and Wilkins’s study were due to the use of general time knowledge to infer when events of a given sort were likely to have occurred. Ninety-nine subjects estimated the time of an earthquake that had occurred 9 months prior to recall and that they reported having actually experienced. Separate estimates were given on each of five time scales ranging from year to hour. Recall of hour was extremely accurate in spite of the relative inaccuracy of the next three grosser time scales. This and other results support Friedman and Wilkins’s original interpretation.     

Flashbulb memories in social groups: A comparative test–retest study of the memory of French President Mitterrand's death in a French and a Belgian group

Flashbulb memories are vivid and long-lasting memories for the reception context of an important public event (Brown & Kulik, 1977). They are assumed to be triggered by emotional factors (i.e., intensity of emotional feeling, appraisal of the original event) and by social factors (i.e., social sharing of the news, following media debate about the event). The present study investigated the memory for the death of the former President of France F. Mitterrand in two social groups, i.e., French and Belgian people. This study tests whether the flashbulb memory attributes, the memory for the original event, and the impact of the emotional and social determinants of flashbulb memory differed across groups. The results indicated that the flashbulb memory for Mitterrand's death is affected by group provenance, as French people showed higher levels of recall for the flashbulb memory attributes and their determinants than Belgian people. Time impaired recollections in both groups, so that flashbulb memories appear prone to decay and share the same destiny as ordinary memories. The theoretical construct of concern - as the most basic antecedent of emotional experiences and its related appraisal (Frijda, 1994) - is discussed in order to explain the differences in memory of the two social groups.     

Feeling before knowing why: The role of the orbitofrontal cortex in intuitive judgments—an MEG study

In theory, intuitive decisions are made immediately, without conscious, reasoned thought. They are experienced as decisions based on hunches that cannot be explicitly described but, nevertheless, guide subsequent action. Investigating the underlying neural mechanisms, previous research has found the orbitofrontal cortex (OFC) to be crucial to intuitive processes, but its specific role has remained unclear. On the basis of a two-stage conceptualization of intuition suggested by Bowers, Regehr, Balthazard, and Parker Cognitive Psychology, 22, 72-110 (1990), we attempt to clarify the OFC’s role in intuitive processing. We propose that it functions as an early integrator of incomplete stimulus input guiding subsequent processing by means of a coarse representation of the gist of the information. On the subjective level, this representation would be perceived as a (gut) feeling biasing the decision. Our aim in the present study was to test this neural model and rule out alternative explanations of OFC activation in intuitive judgments. We used magnetoencephalography (MEG) to record participants' electromagnetic brain responses during a visual coherence judgment task. As in earlier studies, the OFC was found to be activated when participants perceived coherence. Using MEG, it could be shown that this increase in activation began earlier in the OFC than in temporal object recognition areas. Moreover, the present study demonstrated that OFC activation was independent of physical stimulus characteristics, task requirements, and participants’ explicit recognition of the stimuli presented. These results speak to the OFC’s fundamental role in the early steps of intuitive judgments and suggest the proposed neural model as a promising starting point for future investigations.