“…Instructions to participants and the content of the instrument(s) used to gather data are potential sources of bias. In addition to linguistic equivalence, the notion of equivalence can be interpreted and applied in several additional ways: functional equivalence, cultural equivalence, and metric equivalence (Arnold & Matus, 2000;Bracken & Barona, 1991;Erkut, Alarcó n, Coll, Tropp, & García, 1999;Geisinger, 1994;Rogers, Gierl, Tardif, Lin, & Rinaldi, 2003;Rogler, 1999;Sechrest, Fay, & Hafeez Zaidi, 1972;Sireci & Berberoglu, 2000;Standards for Educational and Psychological Testing, 1999;Valencia & Rankin, 1985). The type of equivalence identified as necessary depends on a study's goals and involves consideration of stimuli and outcomes.…”