given no additional restrictions of any of the parameters. This AIC heuristic was utilized in DeSarbo and Cron (1988) for use in selecting K in their unconstrained latent structure regression methodology. Koehler and Murphree (1988) recommend the use of Schwarz’s (1978) information criterion (BIC) due to the issues associated with the AIC’s tending to sometimes select over-specified models (i.e. K too large). This is given by: