The focus of study at McGill was more in the direction of education and intelligence, and Hebb was now more interested in physiological psychology and was critical of the methodology of the experiments there.
Fokus studi di Universitas McGill lebih ke arah pendidikan dan kecerdasan, dan Hebb saat itu lebih tertarik pada kajian fisiologi dari psikologi dan sangat kritis terhadap metodologi percobaan di bidang tersebut.