There are a few characteristics of psychologically based scientists: precision. Can be a vague statement which becomes increasingly more precise through the development of a hypothesis. Predictions are then putting into practice the terms of the hypothesis: skepticism. Continue building on old and new conclusions. Trust neither old nor new unless given substantial evidence (which would never happen: reliance on empirical evidence. A hypothesis is based on its ability to show actual evidence. The principle of falsifiability comes into play as it is to develop a. 5. hypothesis that be proved wrong rather than will be correct. Share ideas so they can be further built on to develop more conclusive evidence. Peer reviews are extremely poplar amongst scientists as they enforce all of the above practices are accurately being considered. A representative sample adequately portrays a relevant demographic of a population being tested. Focuses on individuals in naturalistic observation (essentially in nature) There is also laboratory observation which involves more.