Duncan, J. & Humphreys, G. W. (1989). Visual search and stimulus similarity. Psychol. Rev.96, 433–458.
Search efficiency increases as a function of target–distractor difference and decreases as a function of distractor–distractor difference.
cf.
Palmer, J., Verghese, P. & Pavel, M. (2000). The psychophysics of visual search. Vision Res.40, 1227–1268.
Search efficiency increases as a function of target–distractor difference and decreases as a function of distractor–distractor difference.
cf.
Palmer, J., Verghese, P. & Pavel, M. (2000). The psychophysics of visual search. Vision Res.40, 1227–1268.