short essay

Running head : SHORT ESSAYS

Essay Questions

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Essay questions

1 . What are the functions and characteristics of a good theory

Good theories are what science is made of and some examples are Newton and Einstein theories which are based on gravity and relativity respectively . Theory functions to confirm a prediction and the more it is refuted the better an event or hypothesis in question is tested . As noted all good theories or scientific theory is a proscription

ADDIN EN .CITE Karl Proper3Karl Proper , Ed PearlsteinLincoln NEWhat is a Theory200511 November 2007http /www .nebsc ience .org /theory .html (Karl Proper , 2005 . The more it is unaccepted the better it needs to be confirmed . The more it is presented to be false the more it explains for itself and later confirmed it was true

Though theory is not a guess , all good theories must be consistent with each other . They are built of more hypotheses from another and backed up by events and evidences which mean that a theory is logical and within reason that is consistent in itself and with all the rest other theories

2 . What are the major methods used by behavior geneticists to study the influence of genetics and environment on behavior

Psychogenetic or behavioral genetics is the study of the influence of an organism 's genetic composition on its behavior and the interaction of heredity and environment insofar as they affect behavior

Quantitative genetic methods are used in estimating the net effect of the environmental factors against the genetic factors on individual complex behavioral differences and character traits . Also , the molecular genetic method is used in identifying genes which have specific influence 3 . What do various patterns of concordance in monozygotic twins and in dizygotic twins suggest to researchers

A dizygotic twin commonly develops defective neural tubes . Twinning rates for monozygotic is 3 births per 1000 while in the dizygotic twins births varies . Researchers also noted that twins are more likely to be left handed and language development is often delayed

Twins compared to singletons has three weeks delay in gestation which is an indication of slower development due to the delay in the development of the brain sulci and gyre . Twinning rates across nations are well observed among Africans and Yoruba womens which is almost 1 in 18 births while Orientals have low twin rates than that of Caucasians

4 . Describe the major methods of brain imaging

The method that is very much considered in the developmental neurosciences includes the magnetic resonance imaging . MRI shows blood flows and tissue images without the use of injectables . Along with electro-encephalography (EEG , an earlier technique for monitoring brain activity

Another method is the evoke response potential or the ERP . This method confirms and detects many problems . The scalp must be clean so that the electro paste adheres well to the body

Position emission tomography (PET , is the most modern scanning technique that requires 16 slices of...