Pysch 236 Heritability Coefficient

Pysch 236 Heritability Coefficient - HERITABILITY...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
H ERITABILITY C OEFFICIENT W AYS TO STUDY HERITABILITY : F AMILY STUDIES , T WIN STUDIES , A DOPTION STUDIES H ERITABILITY C OEFFICIENT : ACCOUNTS FOR % OF GENETIC VARIABILITY H ERITABILITY = ( R MZ – R DZ) X 2 R = CORRELATION IDENTICAL TWINS ( MONOZYGOTIC ) SHARE MORE GENES THAN FRATERNAL TWINS ( DIZYGOTIC ), BUT MAY ALSO HAVE MORE SIMILAR ENVIRONMENT . F AMILY MEMBERS %’ S : P ARENT TO C HILD = 50% F ULL SIBLING = 50% H ALF - SIBLING = 25% F RATERNAL TWINS = 50% B EHAVIOR G ENETICS F OCUS : H OW ARE TRAITS PASSED ON ( INHERITED )? A DOPTION S TUDIES : INVESTIGATE HOW SIMILAR THE ADOPTED CHILDREN ARE TO THEIR BIOLOGICAL AND ADOPTIVE PARENTS H ERITABILITY C OEFFICIENT TELLS US : 1) G ENES MATTER 2) G IVES US INSIGHT INTO ORIGINS OF THINGS (E TIOLOGY ), MENTAL RETARDATION IS NOT HERITABLE , BUT MILD RETARDATION IS . 3) I NSIGHT INTO THE EFFECTS OF THE ENVIRONMENT , SHARED ENVIRONMENT ACCOUNTS FOR 5% OF PERSONALITY VARIATION . UNSHARED ENVIRONMENT ACCOUNTS FOR MUCH MORE PERSONALITY = DIFFERENT
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/18/2011 for the course PSY 236 taught by Professor Settles during the Spring '07 term at Michigan State University.

Page1 / 3

Pysch 236 Heritability Coefficient - HERITABILITY...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online