Along with Lawrence Wrightsman, he studied three types of false confessions: voluntary, coerced-compliant, and coerced-internalized. This classification is recognized all over the world. He received the Presidential award from the American Psychological Association for his valuable work on false confessions. Kassim received his PhD in personality and social psychology from theÂ University of Connecticut. In 2010 he, along with other experts, wrote a paper titled, Police-Induced Confessions: Risk Factors and Recommendations. He has also authored several other books on psychology, including The American Jury on Trial, Â The Psychology of Evidence and Trial Procedure, Essentials of Psychology, and Â Developmental Social Psychology. He was awarded the U.S. Supreme Court Judicial Fellowship in 1984 and he has worked at the Federal Judicial Center in Washington D.C.