“…A number of studies have examined the benefits of continuous exposure (Blackerby, 1990; Spivack et al, 1992; Willer et al, 1999; De Weerdt et al, 2000; Shiel et al, 2001; Zhu et al, 2001; Cifu et al, 2003; De Wit et al, 2005), and interventions that incorporate many elements of EE, such as cognitive, social, and physical stimulation (Hayslip et al, 1995; Neely and Backman, 1995; Fasotti et al, 2000; Powell et al, 2002; Vance and Johns, 2002; Gunther et al, 2003; Rath et al, 2003; Noice and Noice, 2004; Van De Winckel et al, 2004; Green et al, 2006; Stine-Morrow et al, 2007; Spikman et al, 2009). These types of interventions can be contrasted with interventions involving manipulations over a discrete period of time that are designed to enhance a specific cognitive domain or skill.…”