We recently presented our conference poster entitled ‘Correlation between Coherent Heart Rate Variability and Divergent Thinking’ at the Creativity and Cognition 2011 Conference in Atlanta, Georgia from 2nd-6th November. ABSTRACT: In this paper, a new quantitative method is proposed for measuring the unconscious mind in the incubation stage of the creative process. The method uses Heart Rate Variability (HRV) as a measure of the emotional and mental state of the participants. The creative process is measured quantitatively by the degree of divergent thinking shown by participants during a study of idea generation. The aim of the study is to see if there is a correlation between coherent HRV and divergent thinking.