The allocation of working memory resources determines the efficiency of attentional templates in single- and dual-target search

Attentional templates are representations of target features in working memory (WM). Although two attentional can guide visual search dual-target search, efficiency is reduced compared with one template single-target search. According to the resource hypothesis (Huynh Cong & Kerzel, 2021), reason that receive an equal share resources WM, which smaller than amount WM allocated template. To assess value this hypothesis, we asked participants always memorize colors, but use corresponding varied. In blocked condition, colors were either maintained as for or simple recall only. mixed color was and other a representation We found reaction times (RTs) delayed precision condition indicating similarly decreased dual- Moreover, recalled much more precisely even when substantially frequency Consistent existence “active” state strongly biased toward however, balanced between templates, representations. Therefore, allocation goes beyond traditional dichotomy “accessory” states explains how variable efficiency.