The concepts in IB Psychology are broad and generic ideas that find various manifestations in different contents and contexts. Using and applying the concepts below is vital skill for the student of IB Psychology.

Bias is a limitation in objective thinking that might skew psychological research. In studying psychology it is important to become aware of different biases and find ways to minimize their impact.

Causality is cause-and-effect relationship between variables. Psychology tries to determine causal relationships, however, this is difficult due to the complexity of human behaviour. 

Change is constant in human behaviour. Psychologists try to find variables that can result in change in our behaviour. Moreover, application of psychological theories and findings can be used to change human behaviour. 

Measurement is a fundamental challenge for psychological research. Complex human behaviour is difficult to observe and objectively measure. Psychologists must select appropriate methods for studying and collecting data relevant to the behaviour studied. 

Perspective relates to different approaches that have evolved to provide multi-dimensional understanding of human beings. Each perspective or approach has their own assumptions about behaviour and students of psychology should become aware of these.

Responsibility refers to ethical principles that guide psychologists, and those who are studying psychology. Understanding different ethical aspects in psychological research and its appliciation is vital for a psychology student.