Reliability and Validity Assessment

  title={Reliability and Validity Assessment},
  author={Edward G. Carmines and Richard A. Zeller},
Explains how social scientists can evaluate the reliability and validity of empirical measurements, discussing the three basic types of validity: criterion related, content, and construct. In addition, the paper shows how reliability is assessed by the retest method, alternative-forms procedure, split-halves approach, and internal consistency method. 

Reliability and validity in research.

  • P. RobertsH. Priest
  • Psychology
    Nursing standard (Royal College of Nursing (Great Britain) : 1987)
  • 2006
This article examines reliability and validity as ways to demonstrate the rigour and trustworthiness of quantitative and qualitative research. The authors discuss the basic principles of reliability

Internal consistency estimates of reliability

Reliability assessments are appropriate for each research instrument in a study. Measures of internal consistency are a popular set of assessments with Cronbach's alpha being the most favored. Two

Measurement Issues: Reliability and Validity

The precision, replicability, sensitivity to change, and accuracy of measures should be assessed in health promotion evaluations, and instruments and measures with known reliability and validity should be used.


A reliable and valid measure is required for measuring the abstract characteristics and the factors must be known and taken into account to construct a reliable scale.

An Overview of Coefficient Alpha and a Reliability Matrix for Estimating Adequacy of Internal Consistency Coefficients with Psychological Research Measures

Issues in reliability assessment that are often neglected in psychological research such as acceptable levels of internal consistency for research purposes, factors affecting the magnitude of coefficient alpha, and considerations for interpreting α within the research context are addressed.

Calculating, Interpreting, And Reporting Cronbach’s Alpha Reliability Coefficient For Likert-Type Scales

The purpose of this paper is to show why single-item questions pertaining to a construct are not reliable and should not be used in drawing conclusions. By comparing the reliability of a summated,

Validity and Reliability of the Research Instrument; How to Test the Validation of a Questionnaire/Survey in a Research

Questionnaire is one of the most widely used tools to collect data in especially social science research. The main objective of questionnaire in research is to obtain relevant information in most

Reliability and validity in a nutshell.

The different concepts of reliability and validity as they are related to measurement instruments in social science and health care and the extent to which they are reliable, valid and usable must be established.

The impact of scale length on reliability and validity

The conventional wisdom in political science seems to hold that simply increasing the length of scales automatically increases their reliability and that validity supposedly increases merely as the

Validation and reliability of the Care Vulnerability Index: A study by interrater agreement and test–retest method

Care Vulnerability Index turned out to be valid with a CVR of 0.879 and there was no significant mean difference between test and retest in global score and in clustered groups of variables.