Effects of bilingualism, aging, and semantic relatedness on memory under divided attention.

We examined how encoding and retrieval processes were affected by manipulations of attention, and whether the degree of semantic relatedness between words in the memory and distracting task modulated these effects. We also considered age and bilingual status as mediating factors. Monolingual and bilingual younger and older adults studied a list of words from a single semantic category presented auditorily, and later free recalled them aloud. During either study or retrieval, participants concurrently performed a distracting task requiring size decisions to words from either the same or a different semantic category as the words in the memory task. The greatest disruptions of memory from divided attention (DA) were for encoding rather than retrieval. The effect of semantic relatedness was significant only for DA at encoding. Older age and bilingualism were associated with lower recall scores in all conditions, but these factors did not influence the magnitude of memory interference. The results suggest that encoding is more sensitive to semantic similarity in a distracting task than is retrieval. The role of attention at encoding and retrieval is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Divided attention and memory: Evidence of substantial interference effects at retrieval and encoding.

In 5 divided attention (DA) experiments, students (24 in each experiment) performed visual distracting tasks (e.g., recognition of words, word and digit monitoring) while either simultaneously encoding an auditory word list or engaging in oral free recall of the target word list. DA during retrieval, using either of the word-based distracting tasks, produced relatively larger interference effects than the digit-monitoring task. DA during encoding produced uniformly large interference effects, regardless of the type of distracting task. Results suggest that when attention is divided at retrieval, interference is created only when the memory and concurrent task compete for access to word-specific representational systems; no such specificity is necessary to create interference at encoding. During encoding, memory and concurrent tasks compete primarily for general resources, whereas during retrieval, they compete primarily for representational systems. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reverse stroop effects with untranslated responses.

Translation accounts have argued that the presence of a Stroop effect in the context of a nonvocal untranslated response is caused by verbal mediation. In its simplest form, color-labeled buttons are translated into a verbal code that interferes with color responses. On this logic, in the reverse Stroop task (identify the word; ignore the color), responses made via word-labeled buttons should also be verbally mediated. Thus, no reverse Stroop effect (RSE) should be seen. The authors tested this verbal mediation hypothesis in 4 reverse Stroop task experiments. An RSE was observed across 4 experiments. The results of Experiments 3 and 4 suggest that this RSE is driven by response competition. It is argued that the data from these 4 experiments are inconsistent with unadorned translation accounts of the RSE but consistent with an account in which the strength of association between a stimulus and a specific response plays a major role. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Working Memory Capacity, Indirect Semantic Priming, and Stroop Interference: Pattern of Interindividual Prefrontal Performance Differences in Healthy Volunteers.

Using neuropsychological models of prefrontal function, the authors investigated the pattern of interindividual prefrontal performance differences in healthy volunteers. Using a correlation and an extreme group approach, they compared verbal and visuospatial working memory capacity with performance on the Stroop interference task as a measure of executive control and on the direct and indirect semantic priming tasks as a measure of semantic access. Subjects with low visuospatial working memory capacity exhibited increased Stroop interference Subjects with low verbal memory capacity showed increased priming and Stroop interference only. The study shows that prefrontal functioning varies interindividually, forming patterns of performance differences. These findings suggest that working memory, executive control, and semantic retrieval are functionally related to some extent. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Abnormal selective attention in psychopathic female offenders.

Research on psychopathy in women has generated equivocal laboratory findings. This study examined the performance of psychopathic women in 2 laboratory tasks designed to assess abnormal selective attention associated with response modulation deficits: a computerized picture-word (PW) task, and a picture-word Stroop (PW Stroop) task. Consistent with data from psychopathic men, women receiving high scores on the Psychopathy Checklist-Revised (Hare, 1991) displayed reduced Stroop interference on the PW and PW Stroop tasks. Results suggest that despite some differences in the expression of psychopathy across gender, psychopathic women are characterized by selective attention abnormalities predicted by the response modulation hypothesis and similar to those exhibited by psychopathic men. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Process-specific interference effects during recognition of spatial patterns and words.

The authors examined recognition memory for words or visuospatial patterns under full (FA) or divided attention (DA) conditions with a distracting task requiring either phonological (rhyme) or visuospatial (curved-line) processing of letters, in 72 young adults. The authors found an interaction such that the curved-line distracting task had a more detrimental effect on corrected recognition, and discriminability measured by d′, for spatial patterns than did the rhyme distracting task, whereas the reverse was true for memory of words. There was also a general effect of DA on response bias such that C increased under DA relative to FA conditions, regardless of the distracting task, and type of information being remembered. Results suggest memory interference from DA at retrieval is process-specific, and that DA at retrieval leads to a more conservative response strategy. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Attentional bias predicts outcome in smoking cessation.

Most attempts to quit smoking end in failure, with many quitters relapsing in the first few days. Responses to smoking-related cues may precipitate relapse. A modified emotional Stroop task-which measures the extent to which smoking-related words disrupt performance on a reaction time (RT) task-was used to index the distracting effects of smoking-related cues. Smokers (N=158) randomized to a high-dose nicotine patch (35 mg) or placebo patch completed the Stroop task on the 1st day of a quit attempt. Smokers using an active patch exhibited less attentional bias, making fewer errors on smoking related words. Smokers who showed greater attentional bias (slowed RT on the first block of smoking words) were significantly more likely to lapse in the short-term, even when controlling for self-reported urges at the test session. Attentional bias measures may tap an important component of dependence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The association of parent behaviors, chronic pain, and psychological problems with venipuncture distress in infants: The Generation R study.

Objective: To examine the association of parent behavior with infant distress during a potentially painful medical procedure. A second aim was to investigate the association of parent chronic pain and psychological problems with parent behavior and infant distress during the procedure. Design: Population-based cohort study with both cross-sectional and prospective measurements. Main Outcome Measures: Video recordings of 275 parents and their 14-month-old infant undergoing venipuncture were coded with an observational instrument to yield measures of infant distress behaviors and parent behaviors, such as reassuring, showing empathy, praising, and distracting. Parent chronic pain and psychological problems were assessed through questionnaires. Results: Infants cried 58% of procedure duration. Parent reassuring occurred 34% of procedure duration, and parent distracting occurred 37% of procedure duration. Infant distress was positively related to parent reassuring and negatively related to parent praising. Parent chronic pain was related to increased parent distracting but not to parent reassuring. Parent psychological problems were not associated with parent behavior and infant distress. Conclusion: Parent behavior rather than psychological traits is related to increased venipuncture distress in young infants. This finding suggests that the focus should be on interventions based on behavior modification. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Working-memory capacity and the control of attention: The contributions of goal neglect, response competition, and task set to Stroop interference.

Individual differences in working-memory (WM) capacity predicted performance on the Stroop task in 5 experiments, indicating the importance of executive control and goal maintenance to selective attention. When the Stroop task encouraged goal neglect by including large numbers of congruent trials (RED presented in red), low WM individuals committed more errors than did high WM individuals on the rare incongruent trials (BLUE in red) that required maintaining access to the "ignore-the-word" goal for accurate responding. In contrast, in tasks with no or few congruent trials, or in high-congruency tasks that followed low-congruency tasks, WM predicted response-time interference. WM was related to latency, not accuracy, in contexts that reinforced the task goal and so minimized the difficulty of actively maintaining it. The data and a literature review suggest that Stroop interference is jointly determined by 2 mechanisms, goal maintenance and competition resolution, and that the dominance of each depends on WM capacity, as well as the task set induced by current and previous contexts. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Allocation of attention and the Type A coronary-prone behavior pattern.

Three studies with 88 undergraduates assessed the attentional style of Ss with the Type A coronary-prone behavior pattern as classified by the Jenkins Activity Survey. Exp I, which used a dual-task paradigm, revealed that Type As focused their attention on central tasks; thus, they attended less to peripheral tasks than did Type Bs. Exps II and III, which used a single task performed in the presence of a distracting stimulus, indicated that Type As actively inhibited or suppressed their attention to task-irrelevant peripheral events that might distract them from task performance. Findings validate observations that Type As appear hyperalert (focused in their attention) but neglect task-irrelevant cues. Previous research has demonstrated that Type As fail to report fatigue as well as other physical symptoms of illness during task performance. To the extent that symptoms are analogous to peripheral events that distract from task performance, the data suggest that Type As suppress their attention to symptoms. Implications of the attentional style of Type As for the pathogenesis of coronary artery and heart disease are discussed. (37 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Priming Trait Inferences Through Pictures and Moving Pictures: The Impact of Open and Closed Mindsets.

A newly developed paradigm for studying spontaneous trait inferences (STI) was applied in 3 experiments. The authors primed dyadic stimulus behaviors involving a subject (S) and an object (O) person through degraded pictures or movies. An encoding task called for the verification of either a graphical feature or a semantic interpretation, which either fit or did not fit the primed behavior. Next, participants had to identify a trait word that appeared gradually behind a mask and that either matched or did not match the primed behavior. STI effects, defined as shorter identification latencies for matching than nonmatching traits, were stronger for S than for O traits, after graphical rather than semantic encoding decisions and after encoding failures. These findings can be explained by assuming that trait inferences are facilitated by open versus closed mindsets supposed to result from distracting (graphical) encoding tasks or encoding failures (involving nonfitting interpretations). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Frontal dysfunction in neurologically normal chronic alcoholic subjects: metabolic and neuropsychological findings

BACKGROUND: Neuropsychological and imaging studies suggest that frontal dysfunction may occur in apparently normal chronic alcoholic subjects. METHODS: To investigate this issue further, we performed neuropsychological and fluorodeoxy-glucose-PET studies in 17 chronic alcoholics without patent neurological and psychiatric complications. RESULTS: Metabolic abnormalities were found in the mediofrontal and in the left dorsolateral prefrontal cortex, but not in the orbitofrontal cortex. Neuropsychological testing revealed significantly reduced verbal fluency and impaired performance on the Stroop test. The mediofrontal hypometabolism correlated with the reduction in verbal fluency and the time necessary to perform the interference condition of the Stroop test. The left dorsolateral prefrontal hypometabolism correlated with the number of errors on the Stroop test. CONCLUSION: These data indicate that circumscribed frontal dysfunctions may occur in chronic alcoholic subjects before clinically obvious neurological complications, and may account for some of the alcohol-related neuropsychological and behavioural impairments.     

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. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relationship between shyness in children and constricted cognitive control as measured by the Stroop Color-Word Test.

103 4th and 5th graders, rated as either shy or nonshy by their teachers, were administered the Stroop Color-Word Test. Results support the hypothesis that shy Ss would have slower reading rates, which indicates high interference proneness (constricted control), whereas nonshy Ss would have more rapid reading rate, which indicates low interference proneness (flexible control). To determine if the procedures for identifying shy Ss also inadvertently differentiated Ss on cognitive skills (verbal ability), and not simply cognitive styles, a subsample of 32 Ss were administered the Stanford Achievement Test (SAT). Results indicate no significant difference between shy and nonshy Ss' group mean stanine scores on the language section of the SAT. Final classroom grades in reading, spelling, and English were also calculated for these 2 groups. Results indicate that the GPA of the shy group exceeded the GPA of their nonshy peers; however, differences were not significant. It appears, therefore, that the results were not confounded by differences in language ability or academic achievement and that these variables do not account for the distractibility findings. Results support the assumption that shy children are unable to maintain effective performance in the presence of interfering or distracting stimuli. (12 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Type A and Type B attentional responses to aesthetic stimuli: Effects on mood and performance.

Recent investigations of the Type A (coronary prone) behavior pattern have found that Type A's focus their attention on a central task and actively inhibit attention to peripheral distracting stimuli. This attentional difference has resulted in greater performance for Type A's than for Type B's (noncoronary prone behavior). However, research on aesthetic stimuli suggests that the focused attention of Type A's may not always be adaptive for solving frustrating cognitive tasks, particularly when paying attention to a peripheral stimulus could enhance performance by reducing negative emotions. Simple, predictable, aesthetic stimuli can have a soothing effect, which reduces negative emotions and enhances performance. The present study, conducted with 62 undergraduates (mean age 24 yrs) who had completed the Jenkins Activity Survey for Health Prediction, found that Type B's had improved affect and performance from attending to a soothing peripheral stimulus (simplex melodies) while working on a frustrating cognitive task (anagrams). Neither the performance nor the affect of Type A's was influenced by the simplex music, because they apparently suppressed paying attention to these melodies. (32 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Verbal encoding effects on the visual short-term memory of learning disabled and normal readers.

Investigated the hypothesis that reading difficulties of learning disabled children are attributable to deficiencies in verbal encoding. Adopting a probe-type serial memory task, 60 normal and learning disabled readers matched on CA (9 yrs old), IQ, and sex were compared on recall performance after pretraining of named and unnamed stimulus conditions. The named condition for normal readers was superior in terms of recall performance. Consistent with the findings of F. Vellutino et al (1972, 1973, 1975), no difference was found in recall of nonverbal stimuli between normal and learning disabled readers. These data suggest that primary reading deficits in learning disabled children are related to verbal encoding deficiencies (visual–verbal integration) and not to deficiencies of visual memory, as suggested by the perceptual deficit hypothesis. (19 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

MerMade: an oligodeoxyribonucleotide synthesizer for high throughput oligonucleotide production in dual 96-well plates

This study was conducted to examine the relationship between baseline salivary cortisol (CORT) levels and selective attention for displays of angry faces. Selective attention was investigated using a pictorial emotional Stroop task, comparing colournaming-speed of angry and neutral faces. The task was assessed in supraliminal (unmasked) and subliminal (masked) conditions to 28 non-clinical subjects (14 male and 14 female). Repeated measures analysis of variance revealed a significant interaction between median split CORT levels (low vs. high) and masked face valence (angry vs. neutral). The latter effect was mainly due to significant facilitation in the high CORT subject-group; these subjects seemed to allocate their attention away from the masked angry face. A relation between baseline CORT levels and fast withdrawal behavior is suggested.     

Use of behavioral therapy in the reinstatement of verbal behavior in a mute psychotic with chronic brain syndrome: A case study.

Employed a behavioral therapy program in order to reinstate verbal behavior in a 58-yr-old psychotic with chronic brain syndrome who had been mute for 5 yr. The program proceeded from the control of simple, nonverbal behaviors to the control of simple, verbal behaviors. The methods employed were those of reinforcement, behavior shaping, and modeling. Completion of the program resulted in the partial reinstatement of verbal behavior. Within 10 hr. of therapy, S verbalized 307 words, 56 different words, and several simple sentences. The verbal behavior reinstated in the therapeutic situation generalized to behavior on the ward. The S began to respond verbally, but not always appropriately, to individuals on the ward who spoke to him. The reinstated verbal behavior had not extinguished 1 yr. later. Results suggest the possibility of developing comprehensive language programs for use with mute psychotics of varying diagnostic categories. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Deduction as verbal reasoning.

Most theories of deduction have assumed that linguistic processes transduce from language into an internal representation and back again, and that non-linguistic processes are central to deduction itself. In this article it is proposed that for deduction tasks for which the necessary information is provided verbally, the heart of deduction for untrained participants involves repeatedly reencoding the problem, a type of behavior referred to here as verbal reasoning. It is shown that model theory accounts of behavior on most deduction tasks are consistent with verbal reasoning and that verbal reasoning can account for detailed behavior in a single task; a computational model of syllogistic reasoning—VR—based on linguistic mechanisms is presented. VR models all of the standard phenomena, makes a number of accurate novel predictions, and fits the behavior of individual participants with an accuracy that rivals their own test–retest reliability. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

On the control of automatic processes: A parallel distributed processing account of the Stroop effect.

Traditional views of automaticity are in need of revision. Recent empirical data suggest that automatic processes are continuous and subject to attentional control. A model of attention is presented. Within a parallel distributed processing framework, it is proposed that the attributes of automaticity depend on the strength of a processing pathway that strength increases with training. With the Stroop effect as an example, automatic processes are shown to be continuous and to emerge gradually with practice. Specifically, a computational model of the Stroop task simulates the time course of processing as well as the effects of learning. This was accomplished by combining the cascade mechanism described by J. L. McClelland (see record 1979-32860-001) with the backpropagation learning algorithm (D. E. Rumelhart et al, 1986). The model can simulate performance in the standard Stroop task, as well as aspects of performance in variants of this task that manipulate stimulus-onset asynchrony, response set, and degree of practice. This model is contrasted against other models, and its relation to many of the central issues in the literature on attention, automaticity, and inference is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)