Katarzyna Hamer

Institute of Psychology — Poland

Social Sciences · Social Sciences

12h-index686citations27works0.02yr avg
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Research Topics

Social and Intergroup Psychology(14), Cultural Differences and Values(11), Misinformation and Its Impacts(5), Psychology of Moral and Emotional Judgment(4), COVID-19 and Mental Health(2)

Publications27 total

Relationships Between Identification With All Humanity and Universalism and Benevolence: The Importance of Distinguishing Interpersonal and Ideological Prosocial Values
International Journal of Psychology·2026Open Access
Potential changes in ties with people all over the world during the COVID-19 pandemic: Quantitative and qualitative analyses of Polish adults
Journal of Social and Political Psychology·2024Open Access
Potential Changes in Ties With People All Over the World During the COVID-19 Pandemic
Open MIND·2024Open Access
Sense of danger, sense of country's mastery, and sense of personal mastery as concomitants of psychological distress and subjective well‐being in a sample of Poles following Russia's invasion of Ukraine: Prospective analyses
Applied Psychology Health and Well-Being·2023· 13 cited
Editorial: Global human identification: studies of its roots, how it may be enlarged, and its expressions in attitudes and behavior
Frontiers in Psychology·2023· 5 citedOpen Access
The role of early intergroup experiences for identification with all humanity in adulthood
Frontiers in Psychology·2023· 8 citedOpen Access
Global Human Identification: Studies of Its Roots, How It May Be Enlarged, and Its Expressions in Attitudes and Behavior
Frontiers research topics·2023Open Access
The dynamics of dyadic interactions between people of different ethnicities depend on their identification with all humanity
Scientific Reports·2022· 9 citedOpen Access
The Identification With All Humanity (IWAH) scale: its psychometric properties and associations with help-seeking during COVID-19
Current Psychology·2022· 5 citedOpen Access
COVID-19: Why Do People Refuse Vaccination? The Role of Social Identities and Conspiracy Beliefs: Evidence from Nationwide Samples of Polish Adults
Vaccines·2022· 44 citedOpen Access
Stand out of my sunlight: The mediating role of climate change conspiracy beliefs in the relationship between national collective narcissism and acceptance of climate science
Group Processes & Intergroup Relations·2021· 54 citedOpen Access
Gender differences in patient-perceived changes to the system of values after a cancer diagnosis
Patient Education and Counseling·2021· 1 cited
Stand out of my Sunlight: The Mediating Role of Climate Change Conspiracy Beliefs in the Relationship between National Collective Narcissism and Acceptance of Climate Science
2021· 5 citedOpen Access
Seeing the human in everyone: Multicultural experiences predict more positive intergroup attitudes and humanitarian helping through identification with all humanity
International Journal of Intercultural Relations·2020· 59 cited
Identification with all humanity—A test of the factorial structure and measurement invariance of the scale in five countries
International Journal of Psychology·2020· 46 cited
Global Human Identification and Citizenship: A Review of Psychological Studies
Political Psychology·2019· 200 cited
What lies beneath? Predictors of identification with all humanity
Personality and Individual Differences·2019· 80 cited
What Is an “Ethnic Group” in Ordinary People’s Eyes? Different Ways of Understanding It Among American, British, Mexican, and Polish Respondents
Cross-Cultural Research·2018· 40 cited
Between universalistic and defensive forms of group attachment. The indirect effects of national identification on intergroup forgiveness
Personality and Individual Differences·2018· 47 cited
“Humanum ignoscere est”. The relationship of national and supranational identifications with intergroup forgiveness
Personality and Individual Differences·2016· 40 cited
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Frequent Co-authors

Sam McFarland(7), Marta Penczek(4), Paul Bertin(3), Sylvain Delouvée(3), Maria Baran(3), Krzysztof Kaniasty(3), Marta Boczkowska(3), Justin D. Hackett(2), Kenzo Nera(2), Isabella Uhl-Haedicke(2), Michał Bilewicz(2), Magdalena Łużniak‐Piecha(2), Agnieszka Golińska(2), Liliana Manrique Cadena(2), Paulina Górska(2), Beata Urbańska(2), Iva Katzarska‐Miller(1), Anna M. Malsch(1), Gerhard Reese(1), Stephen Reysen(1)