Details

Autor(en) / Beteiligte

• Zink, D
• Barney, S
• Gilbert, G
• Allen, D

Titel

Factor Structure of the Search Identification Task (SIT): A Novel Measure of Attention and Working Memory

Ist Teil von

• Archives of clinical neuropsychology, 2013-01, Vol.28 (6), p.106-106

Erscheinungsjahr

2013

Quelle

Oxford Journals 2020 Medicine

Beschreibungen/Notizen

• Objective: Cancellation tasks are commonly used to assess visual scanning, attention, response shifting, and psychomotor speed. The SIT is a novel paper and pencil measure that includes both verbal (letters) and non-verbal (figures) stimuli that increase in level of difficulty across four trials (trials 1-4). In addition, it contains two alternate equivalent forms (A and B). The current study examined the factor structure of the SIT to provide preliminary support for its construct validity. Method: The SIT (forms A and B) was administered to 111 participants (age = 21.8 years, 53.6% female) who were recruited through the psychology subject pool and reported no history of neurological or psychiatric illness. Testing was conducted individually in a private quiet setting. Results: Principal components analysis with Varimax rotation was conducted on scores of each trial of the SIT A and B. According to Kaiser-Guttman criteria and inspection of the factor scree plot, three factors were retained. The extracted factors underwent a Varimax rotation to attain simple structure. The first factor was composed of scores from trials 1 and 2 (eigenvalue = 6.98), the second factor was composed of trial 4 scores (eigenvalue = 2.57), and the third factor was composed of trial 3 scores (eigenvalue = 1.99). Only letter trial 3 of Form A had crossloadings on the second factor. Conclusion: The factor structure of the SIT identified in this study provides preliminary support for the factorial validity of the measure. Further investigations using the SIT with larger normal and clinical samples are needed in order to provide additional support for its construct validity.