Unconscious semantic categorization and mask interactions: An elaborate response to Kunde et al. (2005)

In their original report [Kunde, W., Kiesel, A., & Hoffmann, J. (2003). Conscious control over the content of unconscious cognition. Cognition, 88, 223-242] maintain that “unconscious stimuli [do not] owe their impact […] to automatic semantic categorization” (p.223), and instead propose the action-trigger theory of unconscious priming. In a reply to our paper [Kunde, W., Kiesel, A., & Hoffmann, J. (2005). On the masking and disclosure of unconscious semantic processing. A reply to Van Opstal, Reynvoet, & Verguts (2005). Cognition], the authors adopt a reconcilist position, and propose that both theories may be valid depending on the experimental situation. We discuss the evidence in favor of this position. [Kunde, W., Kiesel, A., & Hoffmann, J. (2005). On the masking and disclosure of unconscious semantic processing. A reply to Van Opstal, Reynvoet, & Verguts (2005). Cognition] also propose an alternative account of our mask-type blocking hypothesis. We report an experiment that distinguishes between our original and their alternative hypothesis.     

Musical structure modulates semantic priming in vocal music

It has been shown that harmonic structure may influence the processing of phonemes whatever the extent of participants' musical expertise [Bigand, E., Tillmann, B., Poulin, B., D'Adamo, D. A., & Madurell, F. (2001). The effect of harmonic context on phoneme monitoring in vocal music. Cognition, 81, B11-B20]. The present study goes a step further by investigating how musical harmony may potentially interfere with the processing of words in vocal music. Eight-chord sung sentences were presented, their last word being either semantically related (La girafe a un tres grand cou, The giraffe has a very long neck) or unrelated to the previous linguistic context (La girafe a un tres grand pied, The giraffe has a very long foot). The target word was sung on a chord that acted either as a referential tonic chord or as a congruent but less referential subdominant chord. Participants performed a lexical decision task on the target word. A significant interaction was observed between semantic and harmonic relatedness suggesting that music modulates semantic priming in vocal music. Following Jones' dynamic attention theory, we argue that music can modulate semantic priming in vocal music, by modifying the allocation of attentional resource necessary for linguistic computation.     

Is Literary Arabic a Second Language for Native Arab Speakers?: Evidence from Semantic Priming Study

The mother tongue of the absolute majority of native Arabic speakers is Spoken Arabic (SA), which is a local dialect that does not have a written form. For reading and writing, as well as for formal communication Literary Arabic (LA) is used. For the literate Arabs, these two languages are extensively inter-twined in every day life. Consequently, it is possible that, despite the difference between them, LA is not processed like a regular second language by the cognitive system of the native Arabic speakers but rather as an enhancement of the spoken lexicon. In the present study we examined this possibility comparing semantic priming effects in auditory lexical decision within SA (L1), with the effects found across languages with LA or in Hebrew (L2). Hebrew is doubtlessly a second language for native Arabic speakers. In this study we have manipulated semantic priming. In Experiment 1 the targets were in Spoken Arabic and the primes in any of the three languages. The semantic priming effect was twice as large within L1 as between languages and there was no difference between Hebrew and LA. In Experiment 2, all primes were in SA whereas the targets were in any of the three languages. The priming effects in that experiment were doubled relative to the previous experiment, but the inter-language relationships were the same. For both language pairings, the semantic priming was larger when the primes were presented in SA (and the targets in either Hebrew or LA) than when the primes were presented in one of the second languages and the targets in SA. The conclusion is that, despite the intensive daily use adult native Arabic speakers make of SA and LA, and despite their shared origin, the two languages retain their status as first and second languages in the cognitive system.     

The elusive nature of early phonological priming effects: are there individual differences?

Lukatela and Turvey (2000) demonstrated a phonological priming effect in the lexical decision task (LDT) with a 14-ms prime and concluded that phonology plays a central role in word meaning activation. In contrast, several other researchers reported that phonological priming is significant only at much longer prime durations (e.g., Ferrand & Grainger, 1994). In two replication attempts (Experiments 1a and 1b), involving a 15-ms prime duration, we found a clear phonological priming effect in one LDT and no evidence of phonological priming in another virtually identical LDT. In Experiment 2, in an attempt to determine whether individual differences may account for the presence or lack of a phonological priming effect, we also tested phonological and perceptual skill. Only participants higher in perceptual and phonological skill showed a phonological priming effect. We conclude that these (and potentially other) variables may have been responsible for previous inconsistent findings of early phonological priming effects.     

Gender differences in implicit and explicit memory for affective passages

Thirty-two participants were administered 4 verbal tasks, an Implicit Affective Task, an Implicit Neutral Task, an Explicit Affective Task, and an Explicit Neutral Task. For the Implicit Tasks, participants were timed while reading passages aloud as quickly as possible, but not so quickly that they did not understand. A target verbal passage was repeated three times, and alternated with other previously unread passages. The Implicit Affective and Neutral passages had strong affective or neutral content, respectively. The Explicit Tasks were administered at the end of testing, and consisted of multiple choice questions regarding the passages. Priming effects in terms of more rapid reading speed for the target compared to non-target passages were seen for both the Implicit Affective Task and the Implicit Neutral Task. Overall reading speed was faster for the passages with neutral compared to affective content, consistent with studies of the emotional Stroop effect. For the Explicit memory tasks, overall performance was better on the items from the repeated passage, and on the Affective compared to Neutral Task. The male subjects showed greater priming for affective material than female subjects, and a greater gain than female subjects in explicit memory for affective compared to neutral material.     

Lateralization of object-shape information in semantic processing

An experiment was conducted to examine whether perceptual information, specifically the shape of objects, is activated during semantic processing. Subjects judged whether a target word was related to a prime word. Prime-target pairs that were not associated, but whose referents had similar shapes (e.g. LADDER-RAILROAD) yielded longer "no" responses than unassociated prime-target pairs, suggesting that shape information had been activated. A visual-field manipulation showed that, in right-handed subjects, this effect was localized in the left hemisphere. This finding is consistent with behavioral, brain imaging, and lesion data, which suggest that object shape at the category level is represented in the left hemisphere.     

Musculoskeletal pain complaints and performance on cognitive tasks over the adult life span

The present study aimed at comparing participants with and without self reported musculoskeletal pain in a normal population with regard to performance on a range of tests for episodic memory, semantic memory, and other cognitive functions and to see if expected differences interacted with age. The results showed that participants with pain performed worse on a range of tasks as compared to participants without pain, and that these differences occurred regardless of age. The most robust effects of pain were displayed on tests for vocabulary and construction ability as these were the only effects that remained significant after controlling for years of education and reported depression in separate analyses. When depression and education were controlled for in the same analysis, even these effects were eliminated, suggesting interplay between pain, depressive status, and educational level in the negative effects on cognitive functioning.     

Right hemispheric dominance in processing of unconscious negative emotion

Right hemispheric dominance in unconscious emotional processing has been suggested, but remains controversial. This issue was investigated using the subliminal affective priming paradigm combined with unilateral visual presentation in 40 normal subjects. In either left or right visual fields, angry facial expressions, happy facial expressions, or plain gray images were briefly presented as negative, positive, and control primes, followed by a mosaic mask. Then nonsense target ideographs were presented, and the subjects evaluated their partiality toward the targets. When the stimuli were presented in the left, but not the right, visual fields, the negative primes reduced the subjects' liking for the targets, relative to the case of the positive or control primes. These results provided behavioral evidence supporting the hypothesis that the right hemisphere is dominant for unconscious negative emotional processing.     

An ERP study of famous face incongruity detection in middle age

Age-related changes in famous face incongruity detection were examined in middle-aged (mean = 50.6) and young (mean = 24.8) subjects. Behavioral and ERP responses were recorded while subjects, after a presentation of a "prime face" (a famous person with the eyes masked), had to decide whether the following "test face" was completed with its authentic eyes (congruent) or with other eyes (incongruent). The principal effects of advancing age were (1) behavioral difficulties in discriminating between incongruent and congruent faces; (2) a reduced N400 effect due to N400 enhancement for both congruent and incongruent faces; (3) a latency increase of both N400 and P600 components. ERPs to primes (face encoding) were not affected by aging. These results are interpreted in terms of early signs of aging.