ArticleslgStudy

science

Personal construct theory

Personal construct theory is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Personal construct theory rather than just read about it. In short: Within personality psychology, personal construct theory (PCT) or personal construct psychology (PCP) is a theory of personality and cognition developed by the American psychologist George Kelly in the 1950s. The theory addresses the psychological reasons for actions.

Key takeaways

  • Personal construct theory belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Personal construct theory to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Personal construct theory from memory before moving on to harder problems.

Reference excerpt

Within personality psychology, personal construct theory (PCT) or personal construct psychology (PCP) is a theory of personality and cognition developed by the American psychologist George Kelly in the 1950s. The theory addresses the psychological reasons for actions. Kelly proposed that individuals can be psychologically evaluated according to similarity–dissimilarity poles, which he called personal constructs (schemas, or ways of seeing the world). The theory is considered by some psychologists as forerunner to theories of cognitive therapy. From the theory, Kelly derived a psychotherapy approach, as well as a technique called the repertory grid interview, that helped his patients to analyze their own personal constructs with minimal intervention or interpretation by the therapist. The repertory grid was later adapted for various uses within organizations, including decision-making and interpretation of other people's world-views. The UK Council for Psychotherapy, a regulatory body, classifies PCP therapy within the experiential subset of the constructivist school.

Principles A main tenet of PCP theory is that a person's unique psychological processes are channeled by the way they anticipate events. Kelly believed that anticipation and prediction are the main drivers of our mind. "Every man is, in his own particular way, a scientist", said Kelly: people are constantly building up and refining theories and models about how the world works so that they can anticipate future events. People start doing this at birth (for example, a child discovers that if they start to cry, their mother will come to them) and continue refining their theories as they grow up. Kelly proposed that every construct is bipolar, specifying how two things are similar to each other (lying on the same pole) and different from a third thing, and they can be expanded with new ideas. (More recent researchers have suggested that constructs need not be bipolar.) People build theories—often stereotypes—about other people and also try to control them or impose on others their own theories so as to be better able to predict others' actions. All these theories are built up from a system of constructs. A construct has two extreme points, such as "happy–sad," and people tend to place items at either extreme or at some point in between. People's minds, said Kelly, are filled up with these constructs at a low level of awareness. A given person, set of persons, any event, or circumstance can be characterized fairly precisely by the set of constructs applied to it and by the position of the thing within the range of each construct. For example, Fred may feel as though he is not happy or sad (an example of a construct); he feels as though he is between the two. However, he feels he is more clever than he is stupid (another example of a construct). A baby may have a preverbal construct of what behaviors may cause their mother to come to them. Constructs can be applied to anything people put their attention to, and constructs also strongly influence what people fix their attention on. People can construe reality by constructing different constructs. Hence, determining a person's system of constructs would go a long way towards understanding them, especially the person's essential constructs that represent their very strong and unchangeable beliefs and their self-construal. Kelly did not use the concept of the unconscious; instead, he proposed the notion of "levels of awareness" to explain why people did what they did. He identified "construing" as the highest level and "preverbal" as the lowest level of awareness. Some psychologists have suggested that PCT is not a psychological theory but a metatheory because it is a theory about theories.

Therapy approach Kelly believed in a non-invasive or non-directive approach to psychotherapy. Rather than having the therapist interpret the person's psyche, which would amount to imposing the doctor's constructs on the patient, the therapist should just act as a facilitator of the patient finding their own constructs. The patient's behavior is then mainly explained as ways to selectively observe the world, act upon it and update the construct system in such a way as to increase predictability. To help the patient find their constructs, Kelly developed the repertory grid interview technique. Kelly explicitly stated that each individual's task in understanding their personal psychology is to put in order the facts of their own experience. Then the individual, like the scientist, is to test the accuracy of that constructed knowledge by performing those actions the constructs suggest. If the results of their actions are in line with what the knowledge predicted, then they have done a good job of finding the order in their personal experience. If not, then they can modify the construct: their interpretations or their predictions or both. This method of discovering and correcting constructs is roughly analogous to the general scientific method that is applied in various ways by modern sciences to discover truths about the universe.

The repertory grid

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Personal construct theory

Start with the simplest possible case. Write down what Personal construct theory claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Personal construct theory before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Personal construct theory ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Personal construct theory

In research
Personal construct theory appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Personal construct theory in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Personal construct theory is common in secondary-school and first-year university syllabi. It links to neighbouring topics Constructivism (psychological school), Personality theories, so understanding it makes those chapters shorter.
In everyday life
Look for Personal construct theory outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Personal construct theory in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Personal construct theory means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Personal construct theory out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Personal construct theory in simple terms?

Within personality psychology, personal construct theory (PCT) or personal construct psychology (PCP) is a theory of personality and cognition developed by the American psychologist George Kelly in the 1950s. The theory addresses the psychological reasons for actions.

Why does Personal construct theory matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Personal construct theory?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Personal construct theory.

Tags

  • Constructivism (psychological school)
  • Personality theories

Keep exploring