Scale-Description


The Child Anxiety Life Interference Scale (CALIS) is a tool designed to assess the extent to which anxiety affects a child’s life, as well as the life of their family. It is a questionnaire completed either by the parents or the children themselves (depending on their age and developmental capacity). The CALIS focuses on how the child’s worries and fears impact their functionality in different settings, such as school, social activities, and daily life.

Data Analysis and Usage


The data collected through the CALIS can be analyzed to:
Determine the severity of anxiety: The scale allows clinicians to identify how much a child’s daily life is affected by anxiety, helping to determine the need for intervention.
Monitor progress: By repeatedly using the tool at different points in time, specialists can track changes in anxiety levels and the impact of therapeutic interventions.
Adjust therapeutic strategies: The results can be used to tailor therapeutic approaches depending on the areas of the child’s life that are most affected.
Compare data: It allows for comparisons between different child populations (e.g., by gender, age, or the presence of other disorders) to better understand the nature and impact of anxiety in various groups.

Purpose


The primary goal of CALIS is to provide a reliable and valid tool to help measure the impact of anxiety on the lives of children and their families. By using this scale, clinicians can better understand the consequences of anxiety and intervene to improve the quality of life for children.

Calibration


Calibration of the CALIS typically involves:
Collecting data from diverse groups: Administering the questionnaire to a representative sample of children with varying levels of anxiety.
Reliability analysis: Checking the consistency of the results by assessing the internal coherence of the tool (e.g., using Cronbach’s alpha).
Validation: The validation process may include comparing CALIS results with other known anxiety measurement tools to confirm the validity of the outcomes.
Adjustments: If necessary, adjustments may be made to the questions or structure of the tool to improve its accuracy and reliability.

Bibliography


Lyneham, H. J., & Rapee, R. M. (2005): “Evaluation of the psychometric properties of the Child Anxiety Life Interference Scale,” which discusses the initial development and validation of the scale.
Schniering, C. A., & Rapee, R. M. (2002): “Development and validation of the Revised Child Anxiety and Depression Scale (RCADS),” which includes a discussion on measures of anxiety and life interference in children.
Stallard, P. (2009): “A clinician’s guide to think good-feel good: Using CBT with children and young people,” which often references the use of CALIS in cognitive-behavioral therapy.