Related Experiment Video
Updated: Oct 4, 2025

04:54
Iterative Development of an Innovative Smartphone-Based Dietary Assessment Tool: Traqq
Published on: March 19, 2021
4.7K
The kleineWeltentdecker App - A smartphone-based developmental diary
Moritz M Daum1, Marco Bleiker2, Stephanie Wermelinger2
1Department of Psychology and Jacobs Center for Productive Youth Development, Developmental Psychology: Infancy and Childhood, University of Zurich, Binzmuehlestrasse 14, Box 21, CH-8050, Zurich, Switzerland. moritz.daum@uzh.ch.
Behavior Research Methods
|February 11, 2022
Summary
Caregivers can now track child development using a new smartphone app. This tool offers longitudinal assessments across various developmental domains, making early childhood development tracking accessible worldwide.
Area of Science:
- Developmental Psychology
- Child Development Research
- Digital Health Tools
Background:
- Existing early childhood development assessment tools have limitations, including being time-consuming and assessing a narrow range of developmental domains.
- Longitudinal assessments are crucial for tracking individual skill changes over time but are often resource-intensive.
- Current methods involve trained experimenters or caregiver questionnaires in controlled or natural settings, each with constraints.
Purpose of the Study:
- To introduce a novel smartphone-based application for assessing and tracking early childhood development across multiple domains.
- To provide caregivers with a portable, user-friendly tool for longitudinal documentation of their child's developmental progress.
- To validate the questionnaires and technical aspects of the developed application for robust developmental assessment.
Main Methods:
- Development and validation of questionnaires integrated into a smartphone application (kleineWeltentdecker App).
- Technical implementation of the app for caregiver use in tracking developmental skills.
- Empirical validation studies involving children across different age groups.
Main Results:
- The constructed questionnaires embedded in the app were validated, confirming their robustness across various age groups.
- Preliminary data analysis from the app demonstrated its validity in assessing developmental changes, such as communicative development.
- The app provides a reliable method for high-density longitudinal assessment of individual children's development.
Conclusions:
- The smartphone-based developmental diary app offers a novel, portable, and accessible solution for longitudinal child development tracking.
- The app empowers caregivers worldwide with a tool to monitor their child's developmental journey across diverse skill domains.
- This technology facilitates a more comprehensive and continuous understanding of early childhood development.

