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
The mission of Alzheimer's & Dementia: Journal of the Alzheimer's Association is to bridge the knowledge gaps across a wide range of bench-to-bedside investigation. The journal publishes the results of studies in: behavior, biochemistry, genetics, molecular biology, pharmacology, physiology, protein chemistry, neurology, neuropathology, psychiatry, geriatrics, neuropsychology, epidemiology, sociology, health services research, health economics, political science and public policy. Content emphasizes interdisciplinary investigations, integrative/translational articles, related to: etiology, risk factors, early detection, disease modifying interventions, prevention of dementia and applications of new technologies in health services.
The journal publishes
- comprehensive reviews;
- research articles;
- information on clinical trials;
- short reports;
- in-depth perspectives/open-peer commentaries;
- theoretical and/or translational papers that attempt integrate knowledge across discipline;
- history & politics of science/brief biographies;
- abstracts of papers presented at international meetings; and
- negative results, particularly clinical trials, as short communications.
The ultimate objective is to create a novel forum for:
- rapid communication of new findings, ideas or perspectives;
- disseminating knowledge, across the spectrum of basic to clinical studies, necessary for optimal translation of research findings into practical applications/interventions;
- integrating knowledge across disciplines;
- increase knowledge in diverse disciplines to promote early detection/diagnosis and/or interventions;
- formulating new theories and/or strategies for the rigorous testing of theories or their predictions;
- identifying promising new directions of research;
- providing the scientific impetus for new initiatives; and
- public policies concerning research on prevention and new models of health services.
Alzheimer's & Dementia is indexed/abstracted in Index Medicus/MEDLINE, Scopus, Science Citation Index Expanded (SciSearch®), Current Contents®/Clinical Medicine, Neuroscience Citation Index®, and Journal Citation Reports/Science Edition.