Relationship Between Repetitive Negative Thinking and CBT Outcomes

The goal of this observational study is to learn about the role of repetitive negative thinking (measured by the RTQ) in adult populations from an anxiety disorders and trauma clinic. The main questions it aims to answer are: * Whether the repetitive negative thinking can be used to predict i. initial symptom severity, and ii. therapy outcome (measured by change in scores on disorder specific measures). * Whether change in RTQ mediates change in outcome Participants are sent weekly questionnaires that measure their progress. Within these questionnaires are the RTQ and other disorder-specific measures that we will be analysing. Researchers may also compare clients with different disorders to see the accuracy the RTQ can predict treatment outcomes for each disorder.