Greg Hajcak Google Scholar: h-index, Total Citations, and Citation Map
Greg Hajcak's h-index is 119 (361 i10-index, 54,779+ total citations across 723+ publications) according to Google Scholar as of October 2026. Greg Hajcak is affiliated with Santa Clara University.
Greg Hajcak is a researcher affiliated with Santa Clara University, specializing in Anxiety, Depression, Adolescence. Their work has been cited 54,779 times. This profile visualizes their global influence, highlighting strong citation networks in United States.
Greg Hajcak's Citation Metrics
Bibliometric impact based on 723 indexed publications. Of these, 18 are original research articles — the rest are literature highlights, conference abstracts or theses.
- H-Index
- 119
- i10-Index
- 361
- Total Citations
- 54,779
- Citing Countries
- 54
As of October 2026.
Greg Hajcak has an h-index of 119 and 54,779 total citations across 723 publications, with research cited by institutions in 54 countries.
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The Obsessive-Compulsive Inventory: Development and Validation of a Short Version
20023,967
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Top Citing Institutions
Visa Evidence Package
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Significant Contributions
Auto-detected research lines — a seminal paper and the follow-up work building on it. Review and edit before using in a petition. Each Free PDF opens in a new tab — EB-1A organises this into the structure USCIS applies to Criterion 5 of 8 CFR § 204.5(h)(3)(v); EB-1B re-frames it under § 204.5(i)(3) (outstanding researcher); NIW presents it under prong 2 of Matter of Dhanasar.
The researcher established the feedback-related negativity as a marker for binary outcome evaluation and extended this framework to identify the reward positivity as a potential biomarker for depression.
The researcher developed and validated a short version of the Obsessive-Compulsive Inventory, establishing a widely adopted, efficient tool for assessing obsessive-compulsive symptoms in clinical and research settings.
The researcher provided seminal empirical evidence documenting the surge in adolescent and young adult depression and anxiety symptoms during the COVID-19 pandemic.
Citation trend (last 10 years)Click to expand
Citation Trend (Last 10 Years)
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About Greg Hajcak's research
Greg Hajcak is a researcher in Anxiety, Depression and Adolescence at Santa Clara University. Their work has been cited 54,779 times across 723 publications (h-index 119), according to Google Scholar.
Their most-cited work, “The Obsessive-Compulsive Inventory: Development and Validation of a Short Version” (2002), has accumulated 3,967 citations. Other influential works include “Event-related potentials, emotion, and emotion regulation: an integrative review” (2010) with 1,844 citations and “Increases in depression and anxiety symptoms in adolescents and young adults during the COVID-19 pandemic” (2022) with 1,116 citations.
Citations of Greg Hajcak's research come primarily from United States, China and Germany, reflecting international research impact across 5+ countries. The interactive citation map above shows the full geographic distribution of the institutions citing this work.
