We propose the Category-Focus IAT (CF-IAT) as an instrument to measure the implicit associations of single concepts. The CF-IAT directs respondents' attention to a subset of the experimental materials. In a first study using the CF-IAT, Chilean adolescents (N = 49), members of either the indigenous minority (Mapuche) or the nonindigenous majority, completed CF-IATs assessing implicit attitudes toward these groups. Results revealed, in both groups, a neutral implicit evaluation of the ingroup, but a negative implicit evaluation of the outgroup. Process evidence suggests that the CF-IAT's manipulation of attentional focus was successful. © 2010 Hogrefe Publishing.