---
title: Strathclyde Inventory
description: "Self-report questionnaire designed to address Carl Rogers' concept of the fully functioning individual. #### Details Originally described by Freire (2007), a 51 item inventory using a five point response scale was shortened to 31 items (SI-31). This has been further…"
url: "https://www.psyctc.org/psyctc/glossary2/strathclyde-inventory/"
updated: "2021-10-31"
category: All OM book glossary entries
---

# Strathclyde Inventory

Self-report questionnaire designed to address Carl Rogers' concept of the fully functioning individual.

#### Details

Originally described by Freire (2007), a 51 item inventory using a five point response scale was shortened to 31 items (SI-31). This has been further shortened to a 12 item version (SI-12) described in Stephen, S., & Elliott, R. (2021). The Strathclyde Inventory: Development of a Brief Instrument for Assessing Outcome in Counseling According to Rogers’ Concept of the Fully Functioning Person. Measurement and Evaluation in Counseling and Development, 1–20. https://doi.org/10.1080/07481756.2021.1955213. See also "[Made to measure](https://therapymeetsnumbers.com/made-to-measure-the-strathclyde-inventory/)" by Stephen for a nice online blog introduction to the SI-12.

#### Try also ...

Modality
Authenticity scale

#### Chapters

Chapter 4

#### Dates

Created 31.x.21