“…In addition, Kavanagh and Hausfeld (1986) suggest that mood has an effect on motor performance and that arousal likely led to an attentional focusing on the experimental task (Kavanagh & Hausfeld, 1986). There are countless studies examining factors that could influence mood and the different effects of mood on memory, cognition, and learning (Gonzalez et al, 2003;Gould & Udry, 1994;Kavanagh & Hausfeld, 1986;Neiss, 1988Neiss, , 1990Posner et al, 2005;Stillman et al, 2009;Thompson et al, 2001). For example, Van Dijk, Voerman, and Hermens (2006) found that increased levels of negative stress and energy, in contrast to positive stress, result in a lack of concentration.…”