Croft has a PhD in psychology, with his thesis focusing on electrophysiology (EEG) methodology. His electrophysiology expertise has been extended into the RF-EMF health research, with his focus being laboratory research determining the effects of RF-EMF on awake and sleep EEG. Although a smaller aspect of his research, he has published RF-EMF epidemiological research, as well as substantial collaborative work employing in vitro and dosimetric methods to address the RF-EMF health issue. Croft is Director of the NHRMC CRE in RF-EMF health, the Australian Centre for Electromagnetic Bioeffects Research (ACEBR) and was Executive Director the forerunner Centre (Australian Centre for Radiofrequency Bioeffects Research), and is a Commissioner within the International Commission on Non-Ionising Radiation Protection (ICNIRP).