Not all negative words slow down lexical decision and naming speed: Importance of word arousal.

Previously the authors (see record 2006-04603-006) analyzed sets of words used in emotion Stroop experiments and found little evidence of automatic vigilance, for example, slower lexical decision time (LDT) or naming speed for negative words after controlling for lexical features. If there is a slowdown evoked by word negativity, most studies to date overestimate the effect because word negativity is often confounded with lexical features that promote slower word recognition. Estes and Adelman (this issue; see record 2008-09984-001) analyze a new set of words, controlling for important lexical features, and find a small but significant effect for word negativity. Moreover, they conclude the effect is categorical. The authors analyze the same data set but include the arousal value of each word. The authors find nonlinear and interaction effects in predicting LDT and naming speed. Not all negative words produce the generic slowdown. Paradoxically, negative words that are moderate to low on arousal produce more LDT slowing than negative words higher on arousal. This finding presents a theoretical and empirical challenge to researchers wishing to understand the boundaries of the automatic vigilance effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Automatic vigilance for negative words in lexical decision and naming: Comment on Larsen, Mercer, and Balota (2006).

An automatic vigilance hypothesis states that humans preferentially attend to negative stimuli, and this attention to negative valence disrupts the processing of other stimulus properties. Thus, negative words typically elicit slower color naming, word naming, and lexical decisions than neutral or positive words. Larsen, Mercer, and Balota (see record 2006-04603-006) analyzed the stimuli from 32 published studies, and they found that word valence was confounded with several lexical factors known to affect word recognition. Indeed, with these lexical factors covaried out, Larsen et al. found no evidence of automatic vigilance. The authors report a more sensitive analysis of 1011 words. Results revealed a small but reliable valence effect, such that negative words (e.g., "shark") elicit slower lexical decisions and naming than positive words (e.g., "beach"). Moreover, the relation between valence and recognition was categorical rather than linear; the extremity of a word's valence did not affect its recognition. This valence effect was not attributable to word length, frequency, orthographic neighborhood size, contextual diversity, first phoneme, or arousal. Thus, the present analysis provides the most powerful demonstration of automatic vigilance to date. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Lexical characteristics of words used in emotional Stroop experiments.

Validity of the emotional Stroop task hinges on equivalence between the emotion and the control words in terms of lexical features related to word recognition. The authors evaluated the lexical features of 1,033 words used in 32 published emotional Stroop studies. Emotion words were significantly lower in frequency of use, longer in length, and had smaller orthographic neighborhoods than words used as controls. These lexical features contribute to slower word recognition and hence are likely to contribute to delayed latencies in color naming. The often-replicated slowdown in color naming of emotion words may be due, in part, to lexical differences between the emotion and control words used in the majority of such studies to date. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Semantic Priming of Different Affective Categories.

The authors investigated affective semantic priming using a lexical decision task with 4 affective categories of related word pairs: neutral, happy, fearful, and sad. Results demonstrated a striking and reliable effect of affective category on semantic priming. Neutral and happy prime-targets yielded significant semantic priming. Fearful pairs showed no or modest priming facilitation, and sad primes slowed reactions to sad targets. A further experiment established that affective primes do not have generalized facilitatory-inhibitory effects. The results are interpreted as showing that the associative mechanisms that support semantic priming for neutral words are also shared by happy valence words but not for negative valence words. This may reflect increased vigilance necessary in adverse contexts or suggest that the associative mechanisms that bind negative valence words are distinct. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of polysemy in lexical decision and naming: An alternative to lexical access accounts.

The effects of polysemy (number of meanings) and word frequency were examined in lexical decision and naming tasks. Polysemy effects were observed in both tasks. In the lexical decision task, high- and low-frequency words produced identical polysemy effects. In the naming task, however, polysemy interacted with frequency, with polysemy effects being limited to low-frequency words. When degraded stimuli were used in both tasks, the interaction appeared not only in naming but also in lexical decision. Because stimulus degradation also produced an effect of spelling-sound regularity in the lexical decision task, the different relationships between polysemy and frequency appear to be due to whether responding was based primarily on orthographic or phonological codes. As such, the effects of polysemy seem to be due to the nature of task-specific processes. An explanation in terms of M. S. Seidenberg and J. L. McClelland's (see record 1990-03520-001) and D. C. Plaut and J. L. McClelland's (1993) parallel distributed processing models is proposed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

"What can we learn from the morphology of Hebrew? A masked-priming investigation of morphological representation": Correction to Frost et al. 1997.

Reports an error in "What can we learn from the morphology of Hebrew? A masked-priming investigation of morphological representation" by Ram Frost, Kenneth I. Forster and Avital Deutsch (Journal of Experimental Psychology: Learning, Memory, and Cognition, 1997[Jul], Vol 23[4], 829-856). On page 854, two Hebrew words are missing from Appendix F. The corrected Appendix appears with the erratum. (The following abstract of the original article appeared in record 1997-05320-003.) All Hebrew words are composed of 2 interwoven morphemes: a triconsonantal root and a phonological word pattern. The lexical representations of these morphemic units were examined using masked priming. When primes and targets shared an identical word pattern, neither lexical decision nor naming of targets was facilitated. In contrast, root primes facilitated both lexical decisions and naming of target words that were derived from these roots. This priming effect proved to be independent of meaning similarity because no priming effects were found when primes and targets were semantically but not morphologically related. These results suggest that Hebrew roots are lexical units whereas word patterns are not. A working model of lexical organization in Hebrew is offered on the basis of these results. (A correction concerning this article appears in Journal of Experimental Psychology: Learning, Memory, and Cognition, 1997, Vol 23(5), 1189-1191. On page 854 of the current issue, two Hebrew words are missing from Appendix F. The corrected Appendix appears in this correction.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

étude du lien entre l'évaluation de la valence et les réponses verbales dans une tache de décision lexicale: Les réponses oui et non sont-elles des réponses affectives?

Evaluation of the positive or negative valence of a stimulus is an activity that is part of any emotional experience that has been mostly studied using the affective priming paradigm. In this study, we use the hypothesis that when a word leads to a positive valence evaluation, this favours a positive verbal response and inversely, a negative valence word favours a negative response. We are testing this hypothesis outside the affective priming paradigm to study to what extent evaluating a word, even when it is not primed, activates both motivational systems and consequently, positive verbal responses for approach and negative responses for avoidance. To validate this hypothesis, we are re-using both versions of the lexical decision task proposed by Wentura (2000). Results show an interaction between the type of response and word valence. It is temporally more onerous to give a no response to positive words than to negative words. This result confirms that there is a direct relation between the evaluation of a valence stimulus and the response to this stimulus, a relation that had up to now been essentially observed with motor behaviours, and more rarely with verbal responses. We propose integrating the existence of this link between evaluation and verbal response (yes and no) in interpreting the effects of affective priming. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

What can we learn from the morphology of Hebrew? A masked-priming investigation of morphological representation.

[Correction Notice: An erratum for this article was reported in Vol 23(5) of Journal of Experimental Psychology: Learning, Memory, and Cognition (see record 2008-09898-001). On page 854, two Hebrew words are missing from Appendix F. The corrected Appendix appears with the erratum.] All Hebrew words are composed of 2 interwoven morphemes: a triconsonantal root and a phonological word pattern. The lexical representations of these morphemic units were examined using masked priming. When primes and targets shared an identical word pattern, neither lexical decision nor naming of targets was facilitated. In contrast, root primes facilitated both lexical decisions and naming of target words that were derived from these roots. This priming effect proved to be independent of meaning similarity because no priming effects were found when primes and targets were semantically but not morphologically related. These results suggest that Hebrew roots are lexical units whereas word patterns are not. A working model of lexical organization in Hebrew is offered on the basis of these results. (A correction concerning this article appears in Journal of Experimental Psychology: Learning, Memory, and Cognition, 1997, Vol 23(5), 1189–1191. On page 854 of the current issue, two Hebrew words are missing from Appendix F. The corrected Appendix appears in this correction.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Putting Some Feeling Into It--The Conceptual and Empirical Relationships Between the Classic and Emotional Stroop Tasks: Comment on Algom, Chajut, and Lev (2004).

D. Algom, E. Chajut, and S. Lev (see record 2004-17825-001) presented a series of definitional, conceptual, and empirical arguments in support of their conclusion that the classic and emotional Stroop effects are, in their words, "unrelated phenomena" (p. 336), such that the term emotional Stroop effect is a misnomer in reference to the relatively greater interference in ink color naming of emotional versus neutral words. These are strong claims. In this comment, the author critically examines each component of Algom et al.'s case and argues that, in fact, none of these components represents compelling evidence in support of their eventual conclusions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Visual Word Recognition of Single-Syllable Words.

Speeded visual word naming and lexical decision performance are reported for 2,428 words for young adults and healthy older adults. Hierarchical regression techniques were used to investigate the unique predictive variance of phonological features in the onsets, lexical variables (e.g., measures of consistency, frequency, familiarity, neighborhood size, and length), and semantic variables (e.g.. imageahility and semantic connectivity). The influence of most variables was highly task dependent, with the results shedding light on recent empirical controversies in the available word recognition literature. Semantic-level variables accounted for unique variance in both speeded naming and lexical decision performance, level with the latter task producing the largest semantic-level effects. Discussion focuses on the utility of large-scale regression studies in providing a complementary approach to the standard factorial designs to investigate visual word recognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A Rational Look at the Emotional Stroop Phenomenon: A Generic Slowdown, Not a Stroop Effect.

The role of Stroop processes in the emotional Stroop effect was subjected to a conceptual scrutiny augmented by a series of experiments entailing reading or lexical decision as well as color naming. The analysis showed that the Stroop effect is not defined in the emotional Stroop task. The experiments showed that reading, lexical decision, and color naming all are slower with emotional words and that this delay is immune to task-irrelevant variation and to changes in the relative salience of the words and the colors. The delay was absent when emotional and neutral words appeared in a single block. A threat-driven generic slowdown is implicated, not a selective attention mechanism associated with the classic Stroop effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Vowel Duration Affects Visual Word Identification: Evidence That the Mediating Phonology Is Phonetically Informed.

What form is the lexical phonology that gives rise to phonological effects in visual lexical decision? The authors explored the hypothesis that beyond phonological contrasts the physical phonetic details of words are included. Three experiments using lexical decision and 1 using naming compared processing times for printed words (e.g., plead and pleat) that differ, when spoken, in vowel length and overall duration. Latencies were longer for long-vowel words than for short-vowel words in lexical decision but not in naming. Further, lexical decision on long-vowel words benefited more from identity priming than lexical decision on short-vowel words, suggesting that representations of long-vowel words achieve activation thresholds more slowly. The discussion focused on phonetically informed phonologies, particularly gestural phonology and its potential for understanding reading acquisition and performance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Wrestling with ambiguity—further reflections: Reply to Masson and Borowsky (1995) and Rueckl (1995).

As noted by S. Joordens and D. Besner (see record 1995-07873-001), a number of distributed models of word recognition encounter difficulties when processing words that have multiple meanings because of competition that occurs when the multiple meanings attempt to instantiate their patterns of activation across a semantic level of representation. This contrasts with humans' lack of difficulty in naming and lexical decision when processing ambiguous words in the absence of a manipulated context. Joordens and Besner therefore concluded that the processing of ambiguous words represents an interesting challenge for distributed models of word recognition. A number of critical issues highlighted in the commentaries by M. E. J. Masson and R. Borowsky (see record 1995-31413-001) and by J. G. Rueckl (see record 1995-31416-001) are addressed in the present article. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Why do non-color words interfere with color naming?

In the non-color-word Stroop task, university students' response latencies were longer for low-frequency than for higher frequency target words. Visual identity primes facilitated color naming in groups reading the prime silently or processing it semantically (Experiment 1) but did not when participants generated a rhyme of the prime (Experiment 3). With auditory identity primes, generating an associate or a rhyme of the prime produced interference (Experiments 2 and 3). Color-naming latencies were longer for nonwords than for words (Experiment 4). There was a small long-term repetition benefit in color naming for low-frequency words that had been presented in the lexical decision task (Experiment 5). Facilitation of word recognition speeds color naming except when phonological activation of the base word increases response competition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Equal homophonic priming with words and pseudohomophones.

The hypothesis that the earliest representations in visual processing of print are activated word-specific units leads to the expectation that homophonic priming (HP) should be greater for word pairs than pseudohomophone pairs. Ten experiments with naming disconfirmed this hypothesis. At interstimulus intervals of 0, 129, 516, and 930 ms, HP for pseudohomophones (e.g., HOEZ-hoze vs. HOGZ-hoze) equaled HP for words (e.g., KNOWS-nose vs. KNEES-nose). The complementary finding of negative HP with pseudohomophones relative to positive HP with words was found in an additional investigation of lexical decision. The results confirm a critical early stage in visual word recognition, in which words are represented in purely phonological form, and implicate equal speeds in dual-route models for nonlexical and lexical processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Representation of Homophones: Evidence From the Distractor-Frequency Effect.

Current models of word production offer different accounts of the representation of homophones in the lexicon. The investigation of how the homophone status of a word affects lexical access can be used to test theories of lexical processing. In this study, homophones appeared as word distractors superimposed on pictures that participants named orally. The authors varied distractor frequency, a variable that has been shown to modulate the interference that distractors produce on picture naming. The results of 3 experiments converged in showing that words interfered in proportion to their individual frequency in the language, even if they have high-frequency homophone mates. This effect of specific-word frequency is compatible with models that assume (a) distinct lexical representations for the individual homophones and (b) that access to such representations is modulated by frequency. The authors discuss the extent to which current models of word production satisfy these constraints. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Stroop process dissociations: The relationship between facilitation and interference.

L. L. Jacoby's (see record 1992-07943-001) "process dissociation procedure" was used to quantitatively estimate the contributions of color-naming and word-reading processes to responding on the Stroop task. Results show that color naming and word reading can operate independently to determine responses. Degrading stimulus colors eliminated the typical asymmetry between Stroop facilitation and interference, as predicted by the equations (Exps 1 and 2). Degrading stimulus colors reduced the estimated contribution of color naming to responding but had no effect on the estimated contribution of word reading (Exp 2). In contrast, increasing the proportion of incongruent items reduced the estimated contribution of word reading but had no effect on the estimated contribution of color naming (Exps 3 and 4). Results indicate that the facilitating and interfering effects of automatic processes cannot be accurately measured in terms of differences from baseline. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reply to Strain, Patterson, and Seidenberg (2002).

E. Strain, K. E. Patterson, and M. S. Seidenberg (2002) reported an effect of imageability and a Regularity X Imageability interaction in a regression analysis of naming latencies to 120 words. One of their items (couth) was named correctly by just 5 of their 24 participants, and its reaction time was an outlier on their distribution. When that single item is removed, the significant predictors are age of acquisition (AoA), word frequency, regularity, and length. Analyses of the combined data from J. Monaghan and A. W. Ellis's (2002) Experiments 1-3 indicate that AoA predicts naming latencies for exception words but not consistent words. E. Strain et al.'s other points are considered in the light of these observations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Is there semantic interference in delayed naming?

The semantic interference effect in the picture–word interference task is interpreted as an index of lexical competition in prominent speech production models. Janssen, Schirm, Mahon, and Caramazza (2008) challenged this interpretation on the basis of experiments with a novel version of this task, which introduced a task-switching component. Participants either named the picture or read the word, depending on the word's color. Janssen et al. reported semantic interference in picture naming, regardless of whether the word appeared simultaneously with the picture (immediate naming) or 1,000 ms after the picture (delayed naming). Because picture name retrieval is completed in less than 1,000 ms, the finding in delayed naming was taken as evidence against the lexical competition account. In 3 sets of experiments conducted in German and English, we tested for semantic effects in Janssen et al.'s task-switching version and in the standard picture–word interference task. Using identical materials, we obtained sizeable interference effects in the standard task (Experiments 2, 4, and 6) but no effects in the task-switching version (Experiments 1, 3, and 5). When the word reading trials of the task-switching version were replaced with no-go trials (Experiment 7), semantic interference reemerged in immediate naming but was still absent in delayed naming. The experiments question the reliability of Janssen et al.'s critical finding and suggest that theoretical inferences about the origin of semantic effects in the standard picture–word interference task based on results from the task-switching version used by Janssen et al. are difficult to draw. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Word length and lexical activation: Longer is better.

Many models of spoken word recognition posit the existence of lexical and sublexical representations, with excitatory and inhibitory mechanisms used to affect the activation levels of such representations. Bottom-up evidence provides excitatory input, and inhibition from phonetically similar representations leads to lexical competition. In such a system, long words should produce stronger lexical activation than short words, for 2 reasons: Long words provide more bottom-up evidence than short words, and short words are subject to greater inhibition due to the existence of more similar words. Four experiments provide evidence for this view. In addition, reaction-time-based partitioning of the data shows that long words generate greater activation that is available both earlier and for a longer time than is the case for short words. As a result, lexical influences on phoneme identification are extremely robust for long words but are quite fragile and condition-dependent for short words. Models of word recognition must consider words of all lengths to capture the true dynamics of lexical activation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)