Newman, F. (2000) Does a story need a theory? (understanding the methodology of narrative therapy). In D. Fee (Ed.) Pathology and the postmodern: mental illness as discourse and experience. London: Sage.
Cole, M., McDermott, R.P. and Hood, L. (1978). Ecological niche-picking: Ecological invalidity as an axiom of experimental cognitive psychology. New York: Rockefeller University, Laboratory of Comparative Cognition.