A developmental theory is? what is the correct answer 1. can be classified as 'correct' and therefore explain all human behaviour and learning patterns. 2. is usually based on the works of psychologists and so is irrelevant to other disciplines. 3. usually 'grouped' based on the century they were developed (I.e. 1900s theories, 2000s theories) 4. can assist in explaining human development but should be critically analysed.