The process of testing ideas about the nature of psychological phenomena without bias before accepting these ideas as adequate explanations is the basis for the method of research.

Scientific.

Explanation:

The scientific method of research allows avoiding any bias and preconceived notions that could interfere in scientific findings. Observation leads to stating a question and a hypothesis to be tested through an experiment that evaluates whether the data collected supports or refutes it.

Psychologists apply scientific research in their studies to understand behavior and its underlying cognitive and physiological means.

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