Semantic priming in the lexical decision task: Roles of prospective prime-generated expectancies and retrospective semantic matching.

In semantic priming paradigms for lexical decisions, the probability that a word target is semantically related to its prime (the relatedness proportion) has been confounded with the probability that a target is a nonword, given that it is unrelated to its prime (the nonword ratio). This study unconfounded these two probabilities in a lexical decision task with category names as primes and with high- and low-dominance exemplars as targets. Semantic priming for high-dominance exemplars was modulated by the relatedness proportion and, to a lesser degree, by the nonword ratio. However, the nonword ratio exerted a stronger influence than did the relatedness proportion on semantic priming for low-dominance exemplars and on the nonword facilitation effect (i.e., the superiority in performance for nonword targets that follow a category name rather than a neutral XXX prime). These results suggest that semantic priming for lexical decisions is affected by both a prospective prime-generated expectancy, modulated by the relatedness proportion, and a retrospective target/prime semantic matching process, modulated by the nonword ratio. (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)     

Phonological priming in auditory word recognition.

Used a priming technique to test specific predictions regarding cohort activation in 3 experiments involving 170 undergraduates. Ss identified target words embedded in noise at different signal-to-noise ratios. The target words were either presented in isolation or preceded by a prime item that shared phonological information with the target. In Exp I, primes and targets were English words that shared 0, 1, 2, 3, or all phonemes from the beginning of the word. In Exp II, nonword primes preceded word targets and shared initial phonemes. In Exp III, word primes and word targets shared phonemes from the end of a word. Reliable phonological priming was observed in all experiments. Results of Exps I and II support the assumption of activation of lexical candidates based on word-initial information, as proposed in cohort theory; however, results of Exp III, which showed increased probability of correctly identifying targets that shared phonemes from the end of words, did not support the predictions derived from the theory. (34 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Affective priming with subliminally presented pictures.

Affective priming studies have demonstrated that subliminally presented prime words can exert an influence on responses towards positive or negative target stimuli. In the present series of experiments, it was investigated whether these findings can be extended to pictorial stimuli. Ideographically selected positive, neutral, and negative picture primes that were sandwich-masked immediately preceded positive or negative target pictures (Experiment 1) or words (Experiments 2 & 3). Evaluative categorization responses to these target stimuli were significantly influenced by the valence of the prime. First, it was demonstrated that high anxious participants were selectively slowed when the subliminally presented prime was negative (Experiments 1 & 2). Second, the affective congruence between primes and targets also exerted an influence on the responses, but in a direction that is opposite to what is typically observed in affective priming research. These reverse priming effects are situated within a series of recent similar findings, and implications for theories of affective priming are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Prelexical facilitation and lexical interference in auditory word recognition.

Phonological priming effects were examined in an auditory single-word shadowing task. In 6 experiments, target items were preceded by auditorily or visually presented, phonologically similar, word or nonword primes. Results reveal facilitation in response time when a target was preceded by a word or nonword prime having the same initial phoneme when the prime was auditorily presented but not when it was visually presented. Second, modality-independent interference was observed when the phonological overlap between the prime and target increased from 1 to 3 phonemes for word primes but not for nonword primes. Taken together, these studies suggest that phonological information facilitates word recognition as a result of excitation at a prelexical level and increases response time as a result of competition at a lexical level. These processes are best characterized by connectionist models of word recognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Lexical and nonlexical phonological priming in reading aloud.

Five homophone priming experiments were reported in which the lexicality of primes and targets were varied, so that primes and targets were either nonword homophones (keff-keph), word homophones (brake-break), pseudohomophones (brayk-braik), or of mixed lexicality (brake-brayk and brayk-break). Results showed that naming of targets was facilitated by a phonologically identical prime only when a word was in the prime-target pairing. Simulations of these data using the dual-route cascaded model of reading (e.g., M. Coltheart, B. Curtis, P. Atkins, & M. Haller, 1993) were also reported. These results are evidence against the view that there is a critical early stage in the process of visual word recognition in which words are represented in purely phonological form, and they are evidence for the view that knowledge of orthography and phonology is represented locally in the reading system. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Masked inhibitory priming in English: Evidence for lexical inhibition.

Predictions derived from the interactive activation (IA) model were tested in 3 experiments using the masked priming technique in the lexical decision task. Experiment 1 showed a strong effect of prime lexicality: Classifications of target words were facilitated by orthographically related nonword primes (relative to unrelated nonword primes) but were inhibited by orthographically related word primes (relative to unrelated word primes). Experiment 2 confirmed IA's prediction that inhibitory priming effects are greater when the prime and target share a neighbor. Experiment 3 showed a minimal effect of target word neighborhood size (N) on inhibitory priming but a trend toward greater inhibition when nonword foils were high-N than when they were low-N. Simulations of 3 different versions of the IA model showed that the best fit to the data is produced when lexical inhibition is selective and when masking leads to reset of letter activities. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

On obtaining episodic priming in a lexical decision task following paired-associate learning.

In four experiments, subjects made lexical (word-nonword) decisions to target letter strings after studying paired associates. In this lexical decision test, word targets previously studied as response terms in the paired associates were preceded at a 150-ms and/or 950-ms stimulus onset asynchrony (SOA) by one of various subsets of the following six types of primes: (a) a neutral ({xxx} or {ready}) prime, (b) a semantically unrelated word prime episodically related to the target through its having been previously studied in the same pair, (c) a semantically related word prime previously studied in a pair with some other unrelated word, (d) a semantically unrelated word prime previously studied in a pair with some other unrelated word, (e) a nonstudied semantically related word prime, and (f) a nonstudied semantically unrelated word prime. At the 950-ms SOA, facilitation of lexical decisions produced by the episodically related primes was greater in test lists in which there were (a) no 150-ms SOA trials intermixed, (b) no previously studied semantically related primes, and (c) no studied nonword targets. At the 150-ms SOA, facilitation from episodic priming was greater in test lists in which there were (a) no semantically related primes and (b) all studied word targets and no studied nonword targets. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Concreteness-dependent associative priming: Separate lexical organization for concrete and abstract words.

Four experiments used associated, unrelated, and neutral ({blank}–word) pairs that varied on prime and target concreteness. In Experiment 1, associated targets were named faster than neutral targets when primes and targets were homogeneous for concreteness (i.e., concrete–concrete or abstract–abstract), but not when they were heterogeneous (i.e., concrete–abstract or abstract–concrete). Experiments 2 and 3, using lexical decision, showed priming for all pairs irrespective of prime and target concreteness. In Experiment 4, the prime was presented for 16.7 ms, followed immediately by a 168-ms random letter mask. Lexical decision times showed priming similar to that in Experiment 1. If priming in Experiments 1 and 4 reflected lexical processes, whereas priming in Experiments 2 and 3 entailed postlexical processes, then lexical processes may be functionally distinct for concrete versus abstract words. These findings are more consistent with dual-coding than common-coding explanations of concreteness. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Syllabic priming in lexical decision and naming tasks: The syllable congruency effect re-examined in French.

This study investigated the role of the syllable in visual recognition of French words. The syllable congruency procedure was combined with masked priming in the lexical-decision task (Experiments 1 and 3) and the naming task (Experiment 2). Target words were preceded by a nonword prime sharing the first three letters that either corresponded to the syllable (congruent condition), or not (incongruent condition). When primes were displayed for 67 ms, similar results were found in both the lexical decision and the naming tasks. Consonant-vowel targets such as BA.LANCE were recognised more rapidly in the congruent condition than in the incongruent and control conditions, while consonant-vowel-consonant targets such as BAL.CON were recognised more rapidly in the congruent and incongruent conditions than in the control condition. When a 43-ms SOA was used in the lexical-decision task, no significant priming effect was obtained. The results are discussed in an interactive-activation model incorporating syllable units. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of word association and meaning frequency in a cross-modal lexical decision task: Is the priming due to "semantic" activation?

Two experiments examined the effects of priming by ambiguous, auditorily presented word primes. In related conditions, primes were followed by either associatively related or semantically related but associatively unrelated targets. When the targets were presented at prime offset (Exp 1), priming effects were observed only for associatively related targets, independent of meaning frequency (i.e., whether the target was related to the dominant or subordinate meaning of the ambiguous prime). When the targets were presented after a 700 msec delay (Exp 2), however, priming effects were observed only for targets related to the prime's dominant meaning, regardless of the nature of the prime-target relation. These results raise the strong possibility that previously reported differences in the nature of priming effects that had been ascribed to meaning frequency might actually be due to differences in associative strength. These results are discussed in terms of J. A. Fodor's (1983; 1990) "anti-semantic" modularity view. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Phonological recoding of nonword orthographic rime primes.

The effectiveness of nonword orthographic rime primes as a function of the regularity (as defined by grapheme-phoneme correspondence [GPC] rules) of typical pronunciation was examined in this research. In Experiments 1 and 2, predictions from GPC and orthographic rime unit accounts converged, but in Experiments 3 and 4 they diverged. Experiment 1 showed that when nonword orthographic rimes were used to prime consistent regular words (e.g., mist) and atypically irregular words (e.g., pint), reliable priming was observed for regular words, but priming of atypically irregular words occurred only in the 2nd block of trials, after the orthographic rime prime itself had been primed by the Block 1 presentation of the target word. In subsequent experiments, only the 1st block of trials was examined. Experiment 2 replicated selective priming of consistent regular words observed in Block 1 of Experiment 1. In Experiment 3, nonword orthographic rimes were as effective at priming typically irregular target words (e.g., grind) as they were in priming inconsistent but typically regular target words (e.g., flint)… (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Masked priming from orthographic neighbors: An ERP investigation.

Two experiments combined masked priming with event-related potential (ERP) recordings to examine effects of primes that are orthographic neighbors of target words. Experiment 1 compared effects of repetition primes with effects of primes that were high-frequency orthographic neighbors of low-frequency targets (e.g., faute-faune [error-wildlife]), and Experiment 2 compared the same word neighbor primes with nonword neighbor primes (e.g., aujel-autel [altar]). Word neighbor primes showed the standard inhibitory priming effect in lexical decision latencies that sharply contrasted with the facilitatory effects of nonword neighbor primes. This contrast was most evident in the ERP signal starting at around 300 ms posttarget onset and continuing through the bulk of the N400 component. In this time window, repetition primes and nonword neighbor primes generated more positive-going waveforms than unrelated primes, whereas word neighbor primes produced null effects. The results are discussed with respect to possible mechanisms of lexical competition during visual word recognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Encoding processes and attentional inhibition in directed forgetting.

Lexical decisions were used to evaluate whether forget (F)-cued prime words affect subsequent encoding of target words relative to remember (R)-cued prime words. In 3 experiments, R-cued primes were better recalled than F-cued primes. Targets that followed F-cued primes were responded to faster than targets that followed R-cued primes in same-case and different-case identity priming. Semantic printing occurred for targets that followed both types of memory-cued primes. However, response times were longer for both related and unrelated targets following R-cued primes relative to F-cued primes. These results indicate that R and F items are processed to similar levels of representation and inhibitory mechanisms do not attenuate encoding of F items. However, there is slower access to working memory for information that follows R-cued items. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Context and lexical access: Implications of nonword interference for lexical ambiguity resolution.

To eliminate potential "backward" priming effects, S. Glucksberg et al (see record 1986-29080-001) introduced a variant of the cross-modal lexical priming task in which subjects made lexical decisions to nonword targets that were modeled on a word related to either the contextually biased or unbiased sense of an ambiguous word. Lexical decisions to nonwords were longer than controls only when the nonword was related to the contextually biased sense of the ambiguous word, leading Glucksberg et al to conclude that context does constrain lexical access and that the multiple access pattern observed in previous studies was probably an artifact of backward priming. We did not find nonword interference when the nonword targets used by Glucksberg et al were preceded by semantically related ambiguous or unambiguous word primes. However, we did replicate their sentence context results when the ambiguous words were removed from the sentences. We conclude that the interference obtained by Glucksberg et al is due to postlexical judgments of the congruence of the sentence context and the target, not to context constraining lexical access. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Individual and developmental differences in semantic priming: Empirical and computational support for a single-mechanism account of lexical processing.

Existing accounts of single-word semantic priming phenomena incorporate multiple mechanisms, such as spreading activation, expectancy-based processes, and postlexical semantic matching. The authors provide empirical and computational support for a single-mechanism distributed network account. Previous studies have found greater semantic priming for low- than for high-frequency target words as well as inhibition following unrelated primes only at long stimulus-onset asynchronies (SOAs). A series of experiments examined the modulation of these effects by individual differences in age or perceptual ability. Third-grade, 6th-grade, and college students performed a lexical-decision task on high- and low-frequency target words preceded by related, unrelated, and nonword primes. Greater priming for low-frequency targets was exhibited only by participants with high perceptual ability. Moreover, unlike the college students, the children showed no inhibition even at the long SOA. The authors provide an account of these results in terms of the properties of distributed network models and support this account with an explicit computational simulation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Masked Repetition and Phonological Priming Within and Across Modalities.

Lexical decision latencies to word targets presented either visually or auditorily were faster when directly preceded by a briefly presented (53-ms) pattern-masked visual prime that was the same word as the target (repetition primes), compared with different word primes. Primes that were pseudohomophones of target words did not significantly influence target processing compared with unrelated primes (Experiments 1-2) but did produce robust priming effects with slightly longer prime exposures (67 ms) in Experiment 3. Like repetition priming, these pseudohomophone priming effects did not interact with target modality. Experiments 4 and 5 replicated this general pattern of effects while introducing a different measure of prime visibility and an orthographic priming condition. Results are interpreted within the framework of a bimodal interactive activation model. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sandwich priming: A method for overcoming the limitations of masked priming by reducing lexical competitor effects.

An orthographically similar masked nonword prime facilitates responding in a lexical decision task (Forster & Davis, 1984). Recently, this masked priming paradigm has been used to evaluate models of orthographic coding—models that attempt to quantify prime-target similarity. One general finding is that priming effects often do not occur when prime-target similarity is moderate, a result that the authors interpret as being due to uncontrolled effects of lexical inhibition. In the present research, a new version of the masked priming paradigm, sandwich priming, was introduced in an effort to minimize the impact of lexical inhibition. Masked sandwich priming involves briefly presenting the target itself prior to the presentation of each prime. Results indicate that the new paradigm was successful. The predicted priming effects were observed for Guerrera and Forster’s (2008) T-All primes (e.g., avacitno–VACATION) and for primes differing from their targets at 3 letter positions (e.g., coshure–CAPTURE)—effects that are not found with the conventional masked priming paradigm. In addition to demonstrating the usefulness of the sandwich priming technique, these results also support the assumption that inhibitory processes play an important role in lexical processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Priming and theories of memory: A reply to Ratcliff and McKoon.

R. Ratcliff and G. McKoon (see record 1994-16298-001) attempt to buttress the case for non-spreading-activation models of associative priming by showing that first-response free association probabilities do not predict priming effects, and sequential effects in lexical decisions are predicted by at least one non-spreading-activation model. The author argues that their attempt to predict priming from free association is not informative because they did not propose a model of how association in memory is manifested in free association, these predictions depended on assumptions that are not consistent with the model tested, the compound-cue model is a poor model of sequential effects, and non-spreading-activation models still cannot explain the absence of inhibition following nonword primes when responses to the primes are not required. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Associative priming in word fragment completion: a dissociation between explicit and implicit retrieval processes

Three experiments investigated associative priming in word fragment completion. In associative priming, the study word that acts as a prime is semantically related in some way to the response word that the subject must produce or respond to at test. For example, a prime might be semantically related to the solution to its paired word fragment (e.g. study "VANILLA", solve fragment "-H-C--A-E" at test, solution is "CHOCOLATE"). Associative priming therefore differs from both repetition and conceptual priming, in which the studied primes are themselves the words that must be produced or responded to at test. In Experiment 1, associative primes were found to influence word fragment completion performance on an explicit test, but not on an implicit test. Experiment 2 demonstrated that the effects of associative primes on explicitly instructed fragment completion cannot be attributed to the specific information about cue-prime relationships that is included in the explicit instructions. Experiment 3 demonstrated that a manipulation of modality, a variable known to disrupt implicit retrieval processes, disrupts repetition priming on an explicit test, but not associative priming. The results of these three experiments suggest that whereas repetition primes are retrieved from memory by both explicit and implicit retrieval processes, associative primes are retrieved by only explicit processes. These data suggest that implicit retrieval processes are cue-dependent processes which automatically retrieve memory information that provides a good match to retrieval cues. Explicit retrieval processes are cue-independent, functioning as an intentional retrieval set to access particular categories or types of memory information.