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J Atten Disord. 2010 Mar;13(5):497-504. doi: 10.1177/1087054708325974. Epub 2009 Mar 11.

Negative priming within a stroop task in children and adolescents with attention-deficit hyperactivity disorder, their siblings, and independent controls.

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1
Philipps-University Marburg, Germany.

Abstract

OBJECTIVE:

Negative priming (NP) is the slowed response to a stimulus that was previously ignored. Response times in NP task conditions were compared with the interference provided by congruent/incongruent stimuli in a Stroop condition in the same task in children diagnosed with attention-deficit hyperactivity disorder (ADHD), their unaffected siblings, and independent controls.

METHOD:

Speed, accuracy, and variability of responses were compared using a computerized NP Stroop test for 35 children with ADHD, 24 siblings without diagnosis, and 37 independent healthy controls aged 6 to 17 years.

RESULTS:

NP was evident at test onset for congruent trials in children without a diagnosis and was reduced initially in those with ADHD occurring in the absence of a significant Stroop interference effect and independently of age or symptom severity. Incongruency masked NP effects. Cases showed more intraindividual response-time variability.

CONCLUSIONS:

Both NP in normal children and its reduction in ADHD cases attenuated across trials reflecting the increased facilitation from previous stimulation.

PMID:
19282267
DOI:
10.1177/1087054708325974
[Indexed for MEDLINE]
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