Developing self-report Likert scales is an essential part of modern psychology. However, it is
hard for psychologists to remain apprised of best practices as methodological developments …

Antecedentes: en el estudio de las propiedades psicométricas de los ítems de un test un
aspecto fundamental es el análisis de su estructura. El objetivo del presente trabajo es dar …

Antecedentes: en el estudio de las propiedades psicométricas de los ítems de un test un
aspecto fundamental es el análisis de su estructura. El objetivo del presente trabajo es dar …

This is a concise, easy to use, step-by-step guide for applied researchers conducting
exploratory factor analysis (EFA) using SPSS. In this book, Dr. Watkins systematically …

Climate change worry involves primarily verbal-linguistic thoughts about the changes that
may occur in the climate system and the possible effects of these changes. Such worry is …

The Oral Health Impact Profile-14 (OHIP-14) has been used to assess the impact that oral
health problems can have on an individual's life. Different theoretical models were proposed …

Background: During the 20th century the alpha coefficient (α) was widely used in the
estimation of the internal consistency reliability of test scores. After misuses were identified …

The business success of small-and medium-sized enterprises (SMEs) increasingly relies on
the adoption of various technological innovations. For today's unpredictable business …

Exploratory factor analysis (EFA) is a widely used statistical method in traffic and
transportation research, particularly for the development and validation of measurement …

Least-squares exploratory factor analysis based on tetrachoric/polychoric correlations is a
robust, defensible and widely used approach for performing item analysis, especially in the …