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Aleksandras Kovalenko
Event knowledge tests and practical polygraph applications in Lithuanian law enforcement
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About Aleksandras Kovalenko
Aleksandras Kovalenko is a Lithuanian polygraph researcher affiliated with the Police Department Ministry of the Interior in Vilnius, Lithuania. His colleague Vitas Saldžiūnas worked with the VIP Protection Department, and together they formed a prolific research partnership throughout their active years from 2009 to 2015. Their work focused on applying psychophysiological detection methods in both criminal investigations and security screening contexts within Lithuanian law enforcement.
Kovalenko's primary research contributions center on the development and refinement of Event Knowledge Tests (EKT) for polygraph examinations. He explored problems of questions in event knowledge tests, noting that application of these tests is limited by difficulties in formulating sufficient relevant questions and by information being publicized in media. His work examined electrodermal activity patterns in field examinations, mathematical efficiency formulas for polygraph accuracy, and practical applications including alibi verification and sexual abuse investigations. His research provided overviews of polygraph screening in Russia and Lithuania's VIP Protection Department, advocating for combining several methods for verifying truth.
Working extensively with co-author Vitas Saldžiūnas, and collaborating with Russian and Bulgarian researchers Vladimir Knyazev and Kalin Gaidarov, Kovalenko published consistently in European Polygraph, contributing to the journal's documentation of Eastern European polygraph practices. His research addressed both theoretical foundations—including memory traces, truth perception, and probability assessment of psychophysiological stimuli—and practical field applications in criminal investigations. His 2010 study with Saldžiūnas on field versus laboratory examinations and their 2011 work on examination efficiency formulas represent significant contributions to understanding optimal conditions for polygraph testing.
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Researchers who have co-authored studies with Aleksandras Kovalenko.
Publications [14]
All peer-reviewed studies by Aleksandras Kovalenko in our database.
Selecting the Most Optimal Conditions for the Polygraph Examination
The authors developed a stress-response model showing that examinees stressed between certain threshold points may become apathetic to external factors including polygraph examination when fatigued. [002] 2014 European PolygraphField Examination: Certain Phenomena Related to Electrodermal Activity
The research documented specific EDA curve shapes and formations that deviated significantly from standard response patterns in real-world testing conditions. [003] 2013 European PolygraphExamination of Sexual Abuse Crimes
The study provides insights into polygraph examination protocols and outcomes specifically related to sexual abuse cases. [004] 2012 European PolygraphTests with Numbers
Mental arithmetic tasks produced observable EDA responses that increased systematically with problem difficulty, demonstrating that cognitive processing alone can generate physiological reactions detectable by polygraph instrumentation. [005] 2012 European PolygraphAlibi Check by Polygraph Examination
Unable to complete - full text not accessible [006] 2012 European PolygraphSearch for New Tests
The study identifies potential new testing methodologies that could enhance polygraph examination effectiveness beyond conventional approaches. [007] 2011 European PolygraphA Little About Memory Traces
The study discusses theoretical aspects of how memory traces are formed and maintained, with implications for polygraph practice. [008] 2011 European PolygraphEfficiency Formula for Polygraph Examination
A mathematical formula was developed to calculate polygraph examination efficiency based on quantitative parameters. [009] 2009 European PolygraphProbability Assessment of the Value of Psychophysiological Stimuli
The paper proposes a probability assessment framework for understanding stimulus value in polygraph testing, formalizing the relationship between stimulus psychological significance and physiological response magnitude, with particular relevance to Event… [010] 2009 European PolygraphProblems of Questions in Event Knowledge Tests
The study identified critical problems in EKT question construction and emphasized that EKT tests cannot be used in a template-based way, requiring extensive preparation time of up to several months… [011] 2009 European PolygraphThe Problems of Truth Perception during Psychophysiological Examination
Specific findings unavailable due to inaccessibility of full text. [012] 2008 European PolygraphThe Event Knowledge Test Alibi Testing Potential in Polygraphic Examination
The EKT successfully bridges the gap between scientifically-supported knowledge testing and practical field application constraints in European criminal investigations. [013] 2008 European PolygraphThe Event Knowledge Test (EKT) in Polygraph Examination (common notice of tactics)
The EKT has been successfully implemented in Lithuanian law enforcement to reveal crime-specific knowledge and help investigate important circumstances of crimes. [014] 2007 European PolygraphLegal and practical aspects of using the polygraph in the Republic of Lithuania
Lithuania developed comprehensive legal regulations governing polygraph use, primarily utilizing the Event Knowledge Test (a modification of the Concealed Information Test) in law enforcement and military intelligence applications, with formal…Explore all research.
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