Ecological Validity

Coined by Egon Brunswik, the term ecological validity refers to a measurable correlation between a proximal cue and a distal variable. Considering a variety of contexts, ecological validity emphasizes an organism–environment interrelation.

Implementing ecological validity within the framework of an experiment leads to greater generalizability within experimental findings, approximating toward wider behavioral settings outside of experimental constraints.

The concept of ecological validity in psychology has traditionally touched upon a number of research factors, including focal stimuli, distal objects, and proximal cues. Ecological validity is a concept whose meaning has been debated in relation to the original conceptual framework developed by Brunswik. Ecological validity has been used in place of terms such as representative design, which is another concept developed by Brunswik.

Concepts such as ecological validity and representative design were developed by Brunswik in response to an asymmetric focus he observed within the field of psychology. In Brunswik's view, psychology placed prominent attention on the study of the organism and insufficient attention on the environment itself. In line with this reasoning, the concept of representative design addresses a need for a sample set of stimuli that is representative of behavioral environments. Representative design correlates stimuli with real-world environmental textures, guiding experimental findings toward states of generalizability. However, representative design, as a method of sampling, does not mean the same thing as ecological validity, which is based on a discrete relation between a perceptual cue and a distal variable.