Birth Order: 1st born will have a mentoring and leadership, more conscientious, achievement oriented, conservative and socially dominant. they are less agreeable and open. The middle child is more insecure, a sense of not belonging, goes with the flow, relationship aren't as important and they do not seek the lime light. the last born seeks attention, not used to sharing, included in older siblings activities and learn quickly and ahead of others their age.
only child has higher self esteem, achievement motivation, obedient, intellectually competence, good peer relationships, lower communication skills and conflict resolution.