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LR-A (Logical Reasoning for Adults) test is a multiple choice intelligence test of abstract reasoning, originally developed by Psychology Lab research team in 2017. It is a nonverbal ability test, designed to measure logical intelligence in adults and older adolescents. The complete test consists of 30 questions, gradually increasing in difficulty. The task is to determine the missing element in a pattern which is presented in the form of a matrix. There is a 30 minute time limit.