It is common knowledge that everyone is different in some way, we are all unique. One of things that make us unique is the way we think and act. We all have our personal constructs. So what is personal construct? Personal construct is a theory of personality developed by psychologist George Kelly. Personal construct theory suggests that the individual differences between people arise from their unique and very personal interpretations of the world around them. It is theorized that people will form ideas about how the world works and then tests these perceptions with their actions. Our thoughts and actions also affect our social perspectives.