Psych 1 - General Psychology - Lecture 19

[ikmig]

So sex is 200% genetic, 0% non-shared environment and -100% shared environment?!

[gofraidh]

Thank you for equation for genetic variance professor or Berkeley. My professor did put these into our tests yet without any sufficient explanation what it is or how should we count it. Yet it's quite simple.... G = 2*(MZ - DZ), that's all I needed to know. Ridiculous.

[Muffinfordinner]

Here's how the "hinky" equation for genetic variance is derived

MZ correlation = Genes + shared environment

DZ correlation = 1/2 genes + shared environment

MZ = G + S

DZ = 1/2G + S

subtract the simultaneous equations

MZ - DZ = 1/2G

multiply by 2

2(MZ - DZ) = G

[undsoft]

Brilliant lectures. Thank you.

[oskey22]

I got a question ...

"How does attitude contribute with humans variances?"

kinda have da answer but want 2 get others people's ideas and responses. Thank you Professor K !

[buenotc]

is that a catch 22 question?

[themachinegunn]

he said intercourse

[oskey22]

yup