Final answer:
Normal age-related changes do include learning new information becoming more difficult due to a decline in fluid intelligence, but engaging in mental and physical activities can help mitigate this effect.
Step-by-step explanation:
The statement that normal age-related changes include difficulty learning new information is generally true. While our crystallized intelligence, which encompasses the knowledge and skills we've accumulated throughout our lives, may remain stable or even improve as we age, our fluid intelligence, associated with processing new information, reasoning, and memory, tends to decline. This can make it harder to learn new things in late adulthood. However, engaging in mental and physical activities can help delay cognitive decline and reduce the incidence of mild cognitive impairment and dementia.
Late adulthood, which starts in the 60s, is when we may observe deterioration in muscle strength, senses like smell and taste, and cognitive functions such as memory. Despite these changes, it is important to note that individual experiences with aging can greatly vary.