In late adulthood, the brain shrinks and total brain mass declines, so that by age 80 years, most people have lost what percent of their peak brain mass?

According to research, the chance of finding a potential partner with the same interest in three favorite leisure activities and with similar opinions about three important role preferences is ______ percent

1 10 20 40

If one wants to increase the efficiency of short-term memory, more items can be held through the process of __________

a) chunking b) decoding c) rote rehearsal d) data compression