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In this episode of The Psych Files, host Michael Britt explores three fascinating new psychology studies. First, research found that making hospital alarms more musical could help prevent dangerous mistakes caused by alarm fatigue. Next, studies on cats and dogs suggest they likely dream about their waking experiences, just like humans do. The brain activity of a sleeping dog resembles when it is chasing a ball, for example. Finally, not all personality tests are created equal - while popular, the Myers-Briggs Type Indicator (MBTI) lacks scientific support, whereas the Big Five model and its personality traits are well-validated by research. However, no test can capture the full complexity of your personality. Psychological science is always uncovering new insights into how our minds work, with much still left to discover.