Biomedical subjects

Christian Frings

Publications and source records attributed to Christian Frings.

5 recordsLinked to original sources

PubMed2006

Strategy effects counteract distractor inhibition: negative priming with constantly absent probe distractors.

It is an accepted, albeit puzzling finding that negative priming (NP) hinges on the presence of distractors in probe displays. In three experiments without probe distractors, the authors yielded evidence that response-biasing processes based on the contingency between prime and probe displays may have caused this finding. It is argued that it is of help in standard NP experiments to process the distractor in the prime display in order to prepare the response to the probe target. When this contingency was removed (Experiments 2 and 3), NP was reliably observed without probe distractors, whereas no NP emerged if the design contained the typical contingency (Experiment 1). For this reason, the data suggest that the absence of NP, which is usually observed under these conditions, may be due to a contingency-based component.

Adult↗

PubMed2006

Negative priming is stronger for task-relevant dimensions: Evidence of flexibility in the selective ignoring of distractor information.

The finding that in selective attention tasks responses to previously ignored stimuli are usually retarded is known as negative priming (NP). In previous studies it has been suggested that NP can depend on behavioural goals--that is, NP was observed only for task-relevant object dimensions. We extend these findings with two experiments demonstrating that stronger NP can be observed for task-relevant dimensions than for task-irrelevant dimensions (a) even if participants' tasks vary blockwise within an experiment and (b) if behavioural goals vary from trial to trial. These results suggest that selective NP is a much more flexible process than previously assumed.

Adult↗

PubMed2006

Relevant distractors do not cause negative priming.

Highly relevant stimuli (such as one's own name) can capture attention in situations in which one can only partially attend to the environment (e.g., the classic "cocktail party" phenomenon, introduced by Moray, 1959). The present study extends previous findings on selection tasks demonstrating these intrusions of relevant stimuli. Not only can highly relevant stimuli be detected more easily, but attempts to deliberately ignore them will also be hampered, so subsequent reactions to such stimuli will not be slowed. In the experiment, participants (N = 32) ignored the first names of other participants without problems, and they showed slowed reactions to such names that they had ignored shortly before (negative priming task). In contrast, no slowing was observed for participants' own names when those names had just previously been used as distractors.

Adult↗

PubMed2005

Negative priming with masked distractor-only prime trials: awareness moderates negative priming.

The literature yields inconsistent evidence for negative priming (NP) following masked distractor-only prime trials. We contrast two different hypotheses on the inconsistent findings: one - which is most compatible with the temporal discrimination theory - that relates the sign of priming effects to the absence vs. presence of prime awareness and one -which is most compatible with the inhibition and episodic retrieval accounts - that relates the sign of priming effects to the prime event being categorized as a to-be-attended vs. to-be-ignored event. In two experiments, it turned out that participants' awareness of the masked stimuli caused the different results (with participants being not aware of the primes showing NP), whereas the factor prime color = probe target color vs. prime color = probe distractor color (i.e., the prime contains the to-be-attended vs. the to-be-ignored signal) did not moderate NP. These findings are discussed with regard to theories of negative priming and the debate on conscious vs. unconscious perception.

Adult↗

PubMed2005

Repeated masked category primes interfere with related exemplars: new evidence for negative semantic priming.

In 4 experiments, the authors found evidence for negatively signed masked semantic priming effects (with category names as primes and exemplars as targets) using a new technique of presenting the masked primes. By rapidly interchanging prime and mask during the stimulus onset asynchrony, they increased the total prime exposure to a level comparable with that of a typical visible prime condition without increasing the number of participants having an awareness of the prime. The negative effect was observed for only low-dominance exemplars and not for high-dominance exemplars. The authors found it using lexical decision (Experiments 1 and 2), lexical decision with a response-window procedure (Experiment 3), and the pronunciation task (Experiment 4). The results are discussed with regard to different theories on semantic priming.

Adult↗