According to historical context, when Rotter began teaching at Ohio State, George Kélly was the director of the clinical psychology program.
Juliàn Rótter was famous for developing the social learning theory and research into the lócus of control.
He is a renowned psychologist who worked with Ohio State University and later the University of Connecticut.
George Kélly was another American Psychologist famous for being the person that established the theory of personality, personal construct psychology.
He is also referred to as the father of clinical cognitive psychology.
Hence, in this case, it is concluded that the correct answer is George Kelly.
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