It is possible that what appear to be references to one ship are in fact coincidental descriptions of different destroyers sharing a single name. For instance, several ships of different classes have used the name Vengeance, and not all of them were Imperator-class destroyers. There has also been more than one Iron Fist. In these cases, successive commanders have kept the name when they moved to newer vessels upon promotion.
Why Twin Studies? Twins provide a valuable source of information for health and psychological research, as their unique relationship allows researchers to pull apart and examine genetic and environmental influences. Twin study findings have been influential in detecting and treating various diseases and psychological disorders. How are they able to do this? Twin studies allow researchers to examine the overall role of genes in the development of a trait or disorder.
View All. Social psychology research methods allow psychologists to get a better look at what causes people to engage in certain behaviors in social situations. In order to empirically study social behavior, psychologists rely on a number of different scientific methods to conduct research on social psychology topics. These methods allow researchers to test hypotheses and theories and look for relationships between different variables.