How Pavlov's experiments with dogs demonstrated that our behavior can be changed using conditioning. One of the most revealing studies in behavioral psychology was carried out by Russian physiologist Ivan Pavlov (1849-1936) in a series of experiments today referred to as 'Pavlov's Dogs'.
Difference between Generation X and Generation Y. Generation X and generation Y are two categories of people that are defined according to the idea that different generations can be separated from one another according to when they were born and to the cultural influences that have shaped them.
The X and Y chromosomes, also known as the sex chromosomes, determine the biological sex of an individual: females inherit an X chromosome from the father for a XX genotype, while males inherit a Y chromosome from the father for a XY genotype (mothers only pass on X chromosomes).