Transdiagnostic process

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A transdiagnostic process is a mental mechanism that underlies and connects many different mental health problems. In the past, Western psychiatry focused on naming disorders and grouping signs and symptoms into categories like those in the DSM. But such labels can be biased, unreliable, and limit what doctors can treat, how they are trained, and what researchers can study.

There is no single biological marker or cognitive process tied to one diagnosis. Instead, many markers and processes seem to appear across multiple conditions. Because of this, researchers are looking at environmental factors such as poverty, discrimination, loneliness, harsh parenting, and childhood trauma as potential causes that affect many disorders and point to broad, shared ways to help people.

Transdiagnostic processes influence a range of thinking and behavior, including attention, memory and imagery, thinking, reasoning, and actions. There isn’t a complete, agreed-upon list yet, but there is growing evidence for several key processes. Understanding these processes could lead to treatments that help many people with different problems by teaching a relatively small set of techniques focused on those underlying mechanisms rather than many disorder-specific methods.

These processes also shed light on how delusions and cognitive biases develop. For example, trying to find patterns where none exist can create illusory connections, and people’s data gathering can be influenced by confirmation bias, meaning new information may not change their beliefs.

This is a developing area of study, with ongoing work to identify the most important transdiagnostic processes and how best to teach them to clinicians.