1 23 Journal of Behavioral Medicine ISSN 0160-7715 Volume 35 Number 4 J Behav Med (2012) 35:443-451 DOI 10.1007/s10865-011-9373-1 Planning and self-efficacy can increase fruit and vegetable consumption: a randomized controlled trial Pimchanok Kreausukon, Paul Gellert, Sonia Lippke & Ralf Schwarzer