Does temperament influence our overall personality development?

Yes it does (Casalin et al., 2012; Thompson, Winer, & Goodvin, 2011; Walters, 2011). For example, children with irritable and anger-prone temperaments are often low in openness and agreeableness, which can cause negative reactions from others and result in them having a hard time making friends (Bridgett et al., 2009; van den Akker, Dekovic, Prinzie, & Asscher, 2010). Also, difficult temperaments are associated with behavioural problems at school and adjustment problems later in life (Christensen, Mitrou, Lawrence, Sanson, & Zubrick, 2011). Our temperament provides us with the raw materials that shape our personalities, but our environments/life experiences 'layer' personality traits onto the early biological temperament (Shiner et al., 2012, p. 440).