“…In truth, in the everyday world, many older individuals conduct many of their daily activities with social partners (e.g., M. Baltes, Wahl, & SchmidFurstoss, 1990); thus, it is meaningful to consider how social partners might help or harm such problem solving (Meegan & Berg, 2002;Strough & Margrett, 2002). There is now consistent evidence that colloboration among older adults may yield performance improvements for older adults on a variety of basic and everyday cognitive tasks, including ''transactive'' memory (Andersson & Rö nnberg, 1995, prose recall (e.g., Dixon & Gould, 1996), inductive reasoning (Margrett & Willis, in press), integrative and everyday tasks (i.e., route planning: Cheng & Strough, 2004) errand planning and comprehension of printed materials (Margrett & Marsiske, 2002) referential tasks (Gould et al, 2002), and social problem solving (Margrett & Marsiske, 2002;Staudinger & Baltes, 1996), as well as more complex everyday tasks, such as coping with prostate cancer and managing diabetes (Palmer et al, 2004;Wiebe et al, 2005). In general, collaboration appears to be beneficial to performance, particularly when it is with a familiar partner, such as a spouse (e.g., Gould, Trevithick, & Dixon, 1991;Gould, Kurzman, & Dixon, 1994;Margrett and Marsiske, 2002; for an exception, see Gould et al, 2002).…”