A theory should:Organize known data:account/organize what we knowExtensiveShould be able to tell you about a variety of different thingsIts explanatory power can explain a variety of thingsFalsifiability (Popper)Sir Carl Popper – came up with the idea that theories should be falsifiable if they are to be considered believableTheories need to be possible to disprove, there need to be situations that can disprove a theoryReasons why theories cant be used:Lacking technologyLacking researchIdea of falsifiable is that ultimately you have to be able to prove the theory wrong. It should lead to certain statements that can be made. And if they can only be made after that fact you’ll see that they cant be used. Explaining things after the fact is not predictive.Heuristic ValueGuide to ActionShould tell you what to do, and what will happen if you do itYou should be able to derive a number of hypothesis (if-then), the theory makes it apparent that you should obtain a specific resultInternally ConsistentShouldn’t make contradictory predictionsParsimonious (Occam’s Razor)Theory should be simple and have the simplest explanation.Occam’s Razor: cuttingLecture 2 Outline of Last Lecture I. Goal of Psychology of PersonalityII. Main Causes of Psychology- Personality a. Psychodynamic theoriesb. Phenomenal Logical Theoriesc. Trait Theories d. Behavioral TheoriesIII. Personality Defineda. Allport’s Definition of Personality i. Psychological Systems1. Fundamental Attribution of Errorsii. Dynamic Organizationsiii. Unique Adjustment1. Universal Law of Affective FacilitationIV. Development of ScienceV. Basic Assumptions of Personality Theoriesa. Determinism vs. Free Willb. Idiographic vs. Nomotheticc. Temporal Emphasisd. Role of Consciousnesse. Balance as a normal Statef. Reductionistic vs. Holisticg. Nature vs. Nurtureh. Personal Factors of Theoristi. Person vs. Situationj. Normality vs. Abnormalityk. Measurement Strategiesl. Continuity of Development Outline of Current Lecture VI. Characteristics of a theory Current LectureA theory should:- Organize known data: o account/organize what we knowPSYC 330 1st Edition- Extensiveo Should be able to tell you about a variety of different things o Its explanatory power can explain a variety of things - Falsifiability (Popper)o Sir Carl Popper – came up with the idea that theories should be falsifiable if they are to be considered believable o Theories need to be possible to disprove, there need to be situations that can disprove a theory Reasons why theories cant be used:  Lacking technology Lacking research  Idea of falsifiable is that ultimately you have to be able to prove the theory wrong. It should lead to certain statements that can be made. And if they can only be made after that fact you’ll see that they cant be used. Explaining things after the fact is not predictive.- Heuristic Valueo- Guide to Actiono Should tell you what to do, and what will happen if you do ito You should be able to derive a number of hypothesis (if-then), the theory makes it apparent that you should obtain a specific result - Internally Consistento Shouldn’t make contradictory predictions- Parsimonious (Occam’s Razor)o Theory should be simple and have the simplest explanation. Occam’s Razor: