“…The two compatibility factors investigated most were skill level and personality type. Five PP studies regarded actual paired skill level as one of the determinant factors of PP effectiveness (Canfora, Cimitile, Garcia, Piattini, & Visaggio, 2005;Cliburn, 2003;Katira et al, 2004;Van Toll, Lee, & Ahlswede, 2007;Williams, Layman, Osborne, & Katira, 2006). The actual skill level was determined based on programming experience, academic background, and students' academic performance.…”