The is a set of principles used to describe the relationships between ideas and empirical evidence.

scientific method                      

Explanation:

The scientific method is referred to as a phenomenon that involves a standardized process to make observations, test predictions, interpret results, form theories, and gather data. Psychologists generally use the scientific method for experimenting or researching. Generally, experimenter or the researcher tries to make observations to measure and describe specific behavior.

It helps the researcher to replicate psychological data and because of this the researcher via replication of different experiments make new generalizations and helps other psychologists to make less error.

early settlements on the subcontinent. both the indus and the ganges rivers carried rich silt from the mountains to the plains. when the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.