“…However, artists and designers may over-emphasise the value of sketching in enhancing creativity, with purported benefits of sketching to performance supported by only patchy and contradictory evidence (Anderson & Helstrup, 1993;Bilda, Gero, & Purcell., 2006;Kokotovich & Purcell, 2001;Verstijnen, Hennessey, van Leeuwen, Hamel, & Goldschmidt, 1998a;Verstijnen, van Leeuwen, Goldschmidt, Hamel, & Hennessey, 1998b). Nonetheless, creator attitudes reflect a belief that sketching must facilitate creativity and when sketching is thwarted the end result is often frustration (Bilda et al, 2006).…”