Young adult results from the three longitudinal studies employing the LearningGames® activities include:
- More like to continue studies after high school,
- More likely to attend a 4-year college,
- More likely to hold a full-time job,
- More likely to hold a skilled job,
- Delayed childbearing,
- Reduced smoking and drug use
Positive effects for the IHDP LearningGames group seen at age 18 in:
- IQ
- Math
- Vocabulary (cognition)
- Fewer risk-taking behaviors
Percent in skilled job or higher education at age 21 (Abecedarian Project)
Campbell, Ramey, et al, 2002, Applied Developmental Science
At age 21, almost 70% of the young adults who had received the Abecedarian intervention in the preschool years were attending a 4-year college or were employed in a skilled job compared to about 40% of those who did not receive the preschool intervention
Age at Birth of First Child (Abecedarian Project)

Campbell, Ramey, et al, 2002, Applied Developmental Science
Among those who had children by age 21, the young adults in the intervention group were older (19.1 years) when their first child was born compared with those in the control group (17.7 years). Although these ages are only about a year and a half apart, in most instances they represent having a child after high school graduation compared to having a child while still enrolled in high school, a significant and possibly life-altering difference.
Post-High School Education for Teen Mothers (Abecedarian Project)
**Note: These outcomes are for the mothers whose children participated in the Abecedarian Project.

Ramey et al, 2000, Applied Developmental Science
Half the parents of the infants enrolled in the Abecedarian program were teenagers. About 80% of the teen mothers whose infants received the Abecedarian program continued on to get post-secondary education compared to about 30% of teen mothers whose infants did not receive the Abecedarian program.