title: Incremental validity of Useful Field of View subtests for the prediction of instrumental activities of daily living.
abstract: BACKGROUND
  The Useful Field of View Test (UFOV®) is a cognitive measure that predicts older adults' ability to perform a range of everyday activities. However, little is known about the individual contribution of each subtest to these predictions, and the underlying constructs of UFOV performance remain a topic of debate.
  
  
  METHODS
  We investigated the incremental validity of UFOV subtests for the prediction of Instrumental Activities of Daily Living (IADL) performance in two independent datasets, the SKILL (n = 828) and ACTIVE (n = 2426) studies. We then explored the cognitive and visual abilities assessed by UFOV using a range of neuropsychological and vision tests administered in the SKILL study.
  
  
  RESULTS
  In the four subtest variant of UFOV, only Subtests 2 and 3 consistently made independent contributions to the prediction of IADL performance across three different behavioral measures. In all cases, the incremental validity of UFOV Subtests 1 and 4 was negligible. Furthermore, we found that UFOV was related to processing speed, general nonspeeded cognition, and visual function; the omission of Subtests 1 and 4 from the test score did not affect these associations.
  
  
  CONCLUSIONS
  UFOV Subtests 1 and 4 appear to be of limited use to predict IADL and possibly other everyday activities. Future research should investigate whether shortening UFOV by omitting these subtests is a reliable and valid assessment approach.
authors.affiliation: a Department of Psychology , University of Cologne , Cologne , Germany.
authors.forename: Frederik
authors.initials: F
authors.lastname: Aust
authors.affiliation: b School of Aging Studies , University of South Florida , Tampa , FL , USA.
authors.forename: Jerri D
authors.initials: JD
authors.lastname: Edwards
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D001364:Awareness; D003071:Cognition / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009048:Motor Skills / Q000502:physiology*; D009483:Neuropsychological Tests; D010364:Pattern Recognition, Visual / Q000502:physiology; D010775:Photic Stimulation; D011237:Predictive Value of Tests; D011340:Problem Solving / Q000502:physiology; D015203:Reproducibility of Results; D012111:Residence Characteristics; D013997:Time Factors; D014792:Visual Acuity / Q000502:physiology; D014825:Vocabulary
keywords: Useful field of view; cognition; everyday tasks; functional performance; instrumental activities of daily living