Certificate In Psychology (CPSY) Practice Exam

During their first year of life, what is the typical growth for MOST healthy babies?

1. Have a head that accounts for 70 percent of their total length by age 1

2. Achieve adult-like body proportions

3. Triple in weight and grow approximately 10 inches

4. Double in height and weight

The correct answer is: Triple in weight and grow approximately 10 inches

The typical growth pattern for most healthy babies during their first year of life is to triple their birth weight and grow approximately 10 inches in height. This remarkable growth reflects the rapid development that occurs during this critical period. By the end of the first year, most infants will have gained significant weight and height, which is crucial for their overall health, development, and readiness for more complex physical activities as they begin to crawl and walk. Regarding weight, it is standard for infants to increase their birth weight by about three times. This increase supports the development of vital bodily functions and the energy needed for growth. Additionally, achieving about 10 inches in growth illustrates the substantial physical changes that occur as babies transition from being dependent newborns to more mobile infants. The other options do not accurately describe typical growth patterns within the first year. For instance, head proportion does not remain as high as 70 percent of total length, nor do infants achieve adult-like body proportions by their first birthday. Instead, they maintain a more infantile proportion with a larger head relative to their body size. Additionally, double the height and weight does not reflect the growth milestones typically seen in healthy infants; rather, the tripling in weight and significant height increase are the correct measures of growth