Final answer:
If a person's life change units total more than 300 over a year, they are likely to develop serious health problems, according to the Social Readjustment Rating Scale.
Step-by-step explanation:
Research has found that if a person's life change units (LCU's) total more than 300 over the course of a year, that individual is particularly likely to develop serious health problems. The Social Readjustment Rating Scale (SRRS), developed by Holmes and Rahe, measures the stress load individuals carry based on various life-changing events they have experienced, with different events carrying different LCU scores. Accumulating a high number of LCUs has been associated with a range of physical and mental health conditions. While the scale has been widely used and is a valuable tool in identifying potential stress-related health outcomes, it has also faced criticism for various reasons, including its generalizations and lack of consideration for individual appraisals of life events.