The lexical approach is a language-based approach to developing taxonomies or organizing frameworks. The lexical approach stems from the lexical hypothesis, which states that any psychological concepts worth measuring should be relevant enough to humanity that it becomes embedded in human language as words or phrases. Therefore, the lexical approach is to take all terms used to describe a psychological concept (e.g., personality) and sort the terms into as few categories as possible, using both logic and statistical analyses. The resulting categories are then examined, labeled, and become the dimensions in the taxonomy, which essentially encompasses all aspects of the psychological concept. The lexical approach is more rigorous than other approaches for taxonomy development because it provides a thorough linguistic and empirical approach in addition to expert opinions.
Research in the field of psychology has advanced greatly due to the lexical approach, which was used to develop widely known and utilized personality taxonomies – the Big 5 and the HEXACO models. Though these taxonomies have greatly influenced our understanding of individuals, they focus only on terms used to describe people. The issue with this is that people do not exist in vacuums – people are heavily influenced by the situations they encounter. To address this gap in research, psychologists have recently used the lexical approach to develop a taxonomy of psychological situations (Parrigon, Woo, Tay, & Wang, 2017). The present article offers a summary of the development and structure of CAPTION – Parrigon et al.’s (2017) taxonomy of psychological situations. Following the description of CAPTION, I reflect on how this taxonomy impacts the field of Industrial-Organizational (IO) Psychology and propose future research and practical implications based on the CAPTION taxonomy.
Development & Structure of CAPTION
CAPTION is an acronym for the 7-dimensional model of psychological situations that Parrigon et al. (2017) derived across four lexically based studies. Specifically, the dimensions are: Complexity, Adversity, Positive valence, Typicality, Importance, Humor, and Negative valence. The CAPTION dimensions consistently emerged across a variety of samples and analytical methods.
The researchers who developed CAPTION started their endeavor by identifying descriptive situational terms used in subtitles of U.S. films from 1900-2007, as opposed to the dictionary, to ensure that the identified terms were actually used in modern language. From this database, Parrigon and colleagues used the process depicted in the figure below to develop the CAPTION taxonomy – the text on the right of the figure describes each step in the process and the numbers inside the figure depict the resulting number of adjectives after completing each step.