Extend your reading even further with these texts!

Mudge, J. F., Baker, L. F., Edge, C. B. and Houlahan J. E. (2012) Setting an optimal α that minimizes errors in null hypothesis significance tests. PLoS ONE, 7 (2): e32734. doi:10.1371/journal.pone.0032734

Snyder, M. and Swann, W. B. (1978) Hypothesis-testing processes in social interaction. Journal of Personality and Social Psychology, 36 (11), p. 1202.

Tabachnick, B. G., Fidell, L. S. and Osterlind, S. J. (2013) Using Multivariate Statistics (6th edition). Boston, MA: Pearson.