Examlex
Identical twins typically are __________ similar in intelligence than fraternal twins; fraternal twins typically are __________ similar in intelligence than single birth siblings.
Monozygotic Twins
Twins who originate from a single fertilized egg, therefore sharing identical genetic material.
Dizygotic Twins
Also known as fraternal twins, they are siblings born at the same time but have developed from two different eggs fertilized by two different sperm.
Self-Esteem
Evaluation of one’s self-concept, usually measured in terms of a relatively stable and global assessment of how a person feels about himself or herself.
Statistical Significance
The likelihood that a research finding represents a genuine effect rather than a chance fluctuation of measurement.
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