Impact Factor & Ranking

3.0 2.25 1.5 0.75 2.773 2014 2015 2016 2017 2018 2.773 2014 2015 2016 2017 2018
  • 1 51
    #20
  • 1 252
    #127
  • 1 254
    #97
  • 1 51
    #20
  • 1 256
    #144
  • 1 255
    #108
  • 1 51
    #18
  • 1 258
    #132
  • 1 256
    #110
  • 1 51
    #23
  • 1 261
    #165
  • 1 261
    #128
  • 1 53
    #15
  • 1 267
    #147
  • 1 267
    #118

About Impact Factor & Ranking

Measure of the number of times an average paper in this journal is cited. Copyright Clarivate Analytics.

Metrics

Year I.F. Behavioral sciences Neurosciences Pharmacology & pharmacy
2018 2.773 15/53 147/267 118/267
2017 23/51 165/261 128/261
2016 18/51 132/258 110/256
2015 20/51 144/256 108/255
2014 20/51 127/252 97/254

Definition

Impact Factor

The Journal Impact Factor is published each year by Clarivate Analytics. It is a measure of the number of times an average paper in a particular journal is cited during the preceding two years.
For example:

A = the number of times articles published in a specific journal in 2014 and 2015 were cited by journals during 2016.
B = the total number of 'citable items' published by that journal in 2014 and 2015. ('Citable items' are usually articles, reviews, proceedings, etc.; not editorials or letters-to-the-editor.)

2016 impact factor = A/B.

Actual value is intentionally only displayed for the most recent year. Earlier values are available in the Journal Citation Reports from Clarivate Analytics

ISI ranking

Journals are often ranked by Impact Factor in an appropriate Clarivate Analytics subject category. As there are now two Impact Factors published – two-year and five-year Impact Factors – this rank may differ, so care is needed when assessing these ranked lists to understand which of the two metrics is being used. In addition, journals can be categorized in multiple subject categories, giving them different ranks for each subject. Consequently, a rank should always be in context to the subject category.

other metrics in impact