<Tab/>Psychological research is scientific because of the procedures that take place. First of all, you need to start with a theory, an organized system of assumptions and principles that purports to explain a specified set of phenomena and their interrelationships. From a theory, a hypothesis develops which is a statement that predicts or accounts for a set of phenomena. Then a hypothesis lead to predictions about a situation. Operational definitions …showed first 75 words of 1177 total…

…showed last 75 words of 1177 total…studies, instead of assessing each study's results separately. <Tab/>When studying people and animals there are many ethics to follow. You also must have reasons to study the subjects, they are: To conduct basic research on a particular species, to discover practical applications, to study issues that cannot be studied experimentally with human beings because of practical or ethical considerations, to clarify theoretical questions and the last, to improve human welfare.