How does birth order affect relationships?

First borns like to care for others, be in control and are organized. The last borns are used to being dependent, are less organized and want someone to look after them. They also balance one another out as the youngest can bring some light-heartedness to the relationship.

How does birth order affect health?

The effects of birth order on health are less straightforward than other outcomes we have examined, as firstborns do better on some dimensions and worse on others. Compared with second-borns, firstborns are 4 percent more likely to be overweight and 2 percent more likely to be obese.

What is the impact of birth order?

The fraternal birth order effect is said to be the strongest known predictor of sexual orientation, with each older brother increasing a mans odds of being gay by approximately 33%. (One of the largest studies to date, however, suggests a smaller effect, of 15% higher odds.)

What effect does birth order have on an individuals personality?

Birth-order effects were significant for intelligence, openness to experience, and intellect (Table 1). (B–H) Personality traits were as follows: extraversion (B), emotional stability (C), agreeableness (D), conscientiousness (E), openness to experience (F), imagination (G), and intellect (H).