SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.
SJR is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and a qualitative measure of the journal’s impact.
The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
© Thomson Reuters Journal Citation Reports 2015
To calculate the five year Impact Factor, citations are counted in 2014 to the previous five years and divided by the source items published in the previous five years.
© Journal Citation Reports 2015, Published by Thomson Reuters
For over twenty years, Early Childhood Research Quarterly (ECRQ) has influenced the field of early childhood education and development through the publication of empirical research that meets the highest standards of scholarly and practical significance. ECRQ publishes predominantly empirical research (quantitative or qualitative methods) on issues of interest to early childhood development, theory, and educational practice (Birth through 8 years of age).
The journal also occasionally publishes practitioner and/or policy perspectives and significant reviews of research. As an applied journal, we are interested in work that has social, policy, and educational relevance and implications and work that strengthens links between research and practice.
Topics of interest include, but are not limited to: • Children's social, emotional, cognitive, behavioral, language, and motor development applied to early childhood settings. • Childcare, program quality, and children's transition to school • The efficacy of early intervention and prevention programs • Public policy, early childhood education, and child development • Best classroom practices and effective early childhood curricula • Professional development and training for early childhood practitioners
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