Related terms:
sibling
openness
big five
older
close
one child
findings
siblings
sisters
effect
only children
agreeableness
parents
family
studies
variables
childhood
attention
sibling rivalry
brothers
personality
conscientiousness
psychology
children
each other
research
personality traits
competition
development
relationship
Wikipedia sources:
Birth order
Sibling
Only child
Alfred Adler
Big Five personality traits
Sibling rivalry
List of multiple births
Context for words:
birth
order
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