The U.S. Census Bureau expects the U.S.A. population to grow to reach these estimates over the next few decades: 1  2010 - 307,745,538. 2  2020 - 336,031,546. 3  2030 - 363,811,435. 4  2040 - 392,172,658. 5  2043 - 400,527,776 (the year of 400 million)
Symptoms of separation anxiety disorder include the following: Subjective feeling of anxiety; Unrealistic worries about the safety of loved ones; Reluctance to fall asleep if not near the primary attachment figure; Excessive dismay (for example, tantrums) if separation from the primary attachment figure is imminent; Nightmares with separation-related themes
Definition. Separation anxiety refers to a developmental stage in which a child experiences anxiety due to separation from the primary care giver (usually the mother). This phase is fairly standard at around 8 months of age and can last until the child is 14 months old.eparation anxiety is a normal stage in an infant's development. It helped keep our ancestors alive and helps children learn how to master their environment. It usually ends at around age 2, when toddlers begin to understand that a parent may be out of sight right now, but they will return later.