Define hypothesis.  Explain types of hypothesispsychology

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ako6777 | Middle School Teacher | (Level 1) Associate Educator

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"A hypothesis is a proposed explanation for an observed phenomenon."

"A proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working Hypothesis) or accepted as highly probable in the light of established facts."

Hypothesis is sometimes confused with the term "theory".  While a hypothesis is an interpretation of a practical situation, a theory is based on greater information and implies the likelihood of truth. 

Types of theories:

  • Inductive-general based on observations
  • Deductive-derived from a theory
  • Nondirectional-states the differences and relation between variables
  • Directional- states the direction of the relation or difference
  • Null-states that there is no significant relation or difference between variables

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