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The current study utilized a bibliometric approach to examine topical investigatory interest in the journal Ergonomics over the past 10 years (2015-2025). The content analysis, comprising 1,042 studies, showed that the most prominent areas of research focus were, in rank order: theory/models, assessment methods/techniques, lift/load carriage, biomechanics, musculoskeletal disorders/dysfunction, driver performance, measurement issues, kinematics, vibration (whole-body), neurophysiology, aviation performance, and human-automation interaction. Highly ranked topics in the journals Applied Ergonomics and Human Factors (i.e., virtual reality, automated vehicles, trust in automation, teams-- see Piotrowski 2025; Piotrowski & Watt, 2025), were deemphasized in the journal Ergonomics. A host of salient topics in the field, individually, represented from 1-2% of the current dataset. In addition, copious investigatory areas receiving moderate or sparse coverage were noted. These findings confirm that there is wide breadth of coverage of ergonomics-related subject matter in this top-tier journal in the field. In addition, the analysis found a wide range of investigatory areas rather neglected by researchers. The current findings a) should be considered exploratory and descriptive in nature, b) highlight popular and understudied areas of investigation in ergonomics/human factors research, and c) provide a scaffold and catalyst in future research efforts in this scientific field.

The study of the psychological and social factors in both recreational and pathological gambling has attracted extensive scholarly attention for decades. Yet few studies have examined the intellectual structure of this evolving field, particularly the scope of topical areas of investigatory interest. The current study utilized a bibliometric approach to examine subject matter coverage in 2 prominent journals in the field (Journal of Gambling Studies, Journal of Gambling Issues) over the past 10 years. The content analysis, comprising 824 studies, indicated that the most prominent areas of research focus were, in rank order: treatment approaches, theory/models, sporting events, sub-types/profile, cognitive distortions, measurement/assessment, etiology/risk factors, substance abuse, and prevention. There is extensive research attention on the detrimental impact of problem gambling on adolescents, particularly in the context of video-gaming. As copious avenues for sports-betting have proliferated in recent years, researchers have shifted their investigatory focus to this emergent area. Overall, this content analysis indicated that there is a wide breadth of topical coverage in these top-tier gambling journals. The findings a) should be considered exploratory in nature, b) highlight popular research areas of scientific interest, and c) provide a scaffold and catalyst for future research efforts in the area of gambling-related disorders.

Examination of research trends in select disciplinary areas sheds light on the nature and scope of extant scholarship. The current study utilized a bibliometric approach to examine research topics emphasized in the journal Human Factors over the past 10 years. The content analysis, comprising 907 studies, showed that the most prominent areas of research were, in rank order: assessment methods/techniques, autonomous vehicles/driving, theory/models, driving performance, trust in automation, driving distraction, human-automation interaction, measurement, teams, biomechanics, neurophysiology, health care applications, and cognitive load. The predominance of these topics has been highlighted in human factors/ergonomics texts. Surprisingly, the analysis identified copious under-studied research areas of investigation, such as motivation, personality, emotions/affect, job-person fit, job analysis, climate, housing, color, toxins, sleep issues, and artificial intelligence (AI). Overall, the analysis indicated a wide breadth of investigatory interest across subject areas in human factors; yet copious research topics, germane to the field, appear to be rather under-represented in this top-tier journal. Differences on topical coverage between the journals Human Factors and Applied Ergonomics (see Piotrowski & Watt, 2025), over the same time span, were noted. These findings a) should be considered exploratory in nature, b) highlight popular and understudied research areas of scientific investigation in contemporary human factors research, and c) provide a scaffold and catalyst in future research efforts in this sub-field of I/O Psychology.

Examination of research trends in select disciplinary areas sheds light on the nature and scope of extant scholarship in a field of study. The current study utilized a bibliometric approach to examine topical investigatory interest in the journal Traumatology. The review comprised 623 studies published over the past 13 years (2011-2024). The content analysis showed that the most prominent areas of research focus were, in rank order: mental health treatment approaches, PTSD-veterans, resilience, natural disasters, post-traumatic growth, adverse childhood traumas, PTSD-adults, secondary trauma/vicarious stress, theory/model, impact on health workers, compassion fatigue, and moral injury. The predominance of these topics has been noted in prior studies on scholarship regarding psychological trauma. Surprisingly, copious under-studied research areas of investigation were identified: most noteworthy, taxonomy, acute stress disorder, pre-existing factors, cumulative traumas, chronic pain, death in family, sleep disorders, and defense mechanisms. Recognizing the scope of neglected areas of study ensures a holistic perspective on this major sub-field in psychology. The results illustrate the wide span of coverage of research topics in this prominent journal. These findings a) should be considered exploratory in nature, b) highlight popular and under-studied topics spanning the domain of psychological trauma, and c) provide a catalyst and descriptive framework for further bibliometric research on the sub-field of trauma studies.

Based on Rorschach administration, Drechsler (1960) concluded that the colors red and green can interfere with thought processes, with recent research corroborating these findings (Piotrowski, 2023). Since proper assessment protocol requires optimal effort on the part of the patient/client, the color décor of the furniture and examining room can have a significant impact on the productivity and validity of projective testing results. [...]music therapy is a recognized treatment approach (Li et al., 2021), and there actually is a Music Apperception Test (van den Daele et al., 2018). [...]mental health professionals involved in projective assessment need to be cognizant of myriad environmental factors that could have a potential moderator effect on the psychological state of individuals undergoing testing. [...]in addition to the issues noted above, factors such as room aesthetics, chair design, lighting, noise interruptions, and/or personal comfort could play a significant role in the assessment enterprise.

Overall, nearly all of the investigations found some degree of utility regarding projective tests as part of the research design. [...]despite methodological critiques, projective measures are considered valid research tools across contemporary business-related areas of study. Keywords: projective tests, usage, marketing, business research Introduction: From a historical perspective, Projective Techniques have garnered significant research attention across a myriad of applied fields within the domain of МО psychology, most notably in the area of management, human resource selection, marketing, advertising, and consumerism (Cox, 1948; Donoghue, 2000; Grant et al., 1967; Greenberg, 1959; Haire, 1950; Hussey & Duncombe, 1999; Kinslinger, 1966; Phelan, 1962; Piotrowski, 2014; Steinmann, 2009; Vicary, 1948; Watt & Piotrowski, 2025; Will et al., 1996; Zober, 1956). Despite reliance on projective assessment in the field of marketing and management, a systematic review of contemporary business research applications using projective methods has not been conducted. [...]the aim of the current study is to a) identify scholarly publications in the recent I/O literature that included projective measures/tests in the research design, and b) provide a synopsis of major findings of key empirical studies across the fields of marketing, advertising, and consumerism. The current bibliographic review indicates that, historically, many sub-fields within the purview of Industrial/Organizational Psychology have embraced projective tests as acceptable measurement tools in scholarly investigations (Fassbender, 1997; Watt & Piotrowski, 2025). [...]acceptance is evident in the contemporary literature on marketing, consumerism, and human resources.

The scientific investigation of emotions has attracted scholarly interest for well over a century, represented by an extensive body of knowledge. Yet, there is a dearth of studies regarding the breadth of investigatory interest areas representing this voluminous repository of research literature. The past three decades has seen the emergence of a rather distinguished publication with a focus on the subject matter of emotions, the journal Emotion. In order to grasp the scope and expanse on this prominent area of scholarship, the current study reports on a bibliometric analysis of research studies published in Emotion over the past 10 years (2013-2023). The analysis reviewed 1,376 articles; of these 31 were erratum, comments, editorials. Since the aim of the analysis was to include only primary research, the total dataset under review represented 1,345 studies. The author determined the topical descriptor that reflected the main focus/aim of each study, and maintained a frequency tally across individual topical categories. The top 10 investigatory subjects were (in rank order): facial expression, theory/model, measurement/type of data analysis, neurophysiology, emotion regulation, cross-cultural, memory, intimate relationships, threat, and anxiety. A myriad of salient topics received sparse coverage, i.e., love, hate, personality, dreams, substance abuse, frustration, and social media. These findings a) provide an exploratory overview on the scientific landscape regarding contemporary research trends, and b) indicate that emotion science is both a robust and evolving field of study.

Extensive media and research attention has been devoted on gun violence. However, to date, studies on the scope and breadth of research on the nexus of firearms and mental health have not been published. To address this void in the literature the current study examines the nature of contemporary scholarship on guns/firearms indexed in the behavioral sciences database PsycINFO. To that end, a bibliometric analysis of contemporary studies (2013-2022) on the topic of guns/firearms was conducted. Based on the analysis of 1,240 peer-reviewed journal articles, the 10 major areas of research focus were (in rank order): suicide-adults, theory/models, police shootings, mass shootings, intimate partner violence, college campus carry/violence, legislation, storage, role of the clinician, and school shootings. Topics which garnered limited research attention were noted (e.g., lethal means safety counseling, police training, restraining orders, red flag legislation). Overall, results indicate that the contemporary mental health literature on guns/firearms is wide in scope, reflecting eclectic theoretical perspectives and investigatory frameworks. These findings should provide a) a descriptive tapestry of contemporary research trends, and b) directions for future scholarship on the issue of guns/firearms.