Eleven of the first 14 American Ph.D.s in psychology were his students. James M. Cattell (1860-1944) was a student in G. Stanley Hall's laboratory course at Johns Hopkins University and went on to study with Wilhelm Wundt in Germany in 1883.
Drug-induced tremor is a simple nervous system and muscle response to certain medications. Drugs that can cause tremor include the following: 1  Cancer medicines such as thalidomide and cytarabine.  Seizure medicines such as valproic acid (Depakote), and sodium valproate (Depakene)
Some diseases such as Parkinson's disease or multiple sclerosis cause uncontrollable shaking of hands or hand tremor as there is destruction of the nerve tissue. Stroke, head injury, excessive stress, strong emotions, physical exhaustion may also cause uncontrollable shaking of hands or hand tremor.