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Katarzyna Hamer

Datos Biográficos

ID154355
NOMBREKatarzyna Hamer
NOMBRESKatarzyna
APELLIDOHamer
FIRMAHAMER K
AFILIACIONESInstitute of Psychology
ORCID0000-0003-1964-7763
VERIFICADOSí
TOTAL DE OBRAS12
TOTAL DE CITAS30
TOTAL COMO AUTOR12
TOTAL COMO EDITOR0
PRIMER AÑO DE PUBLICACIÓN2013
AÑO MÁS RECIENTE DE PUBLICACIÓN2026
ÍNDICE H3
  • Beyond Weird societies

    Open Access•Katarzyna Hamer, Marta Penczek et al.•ARTICLE•Political Psychology•2026

    In an increasingly globalized world challenged by multiple social problems, global social identifications (GSIs, e.g., with all humanity) are concepts of growing interest. Although such identifications can be affected by the cultural contexts in which they are manifested, research on them remains largely confined to Western, Educated, Industrialized, Rich, Democratic (WEIRD) societies. Using data collected in 45 countries ( N = 9807, preregistere…

  • Relationships Between Identification With All Humanity and Universalism and Benevolence

    Open Access•John B Nezlek, Katarzyna Hamer et al.•ARTICLE•International Journal of Psychology•2026

    In three studies conducted in the United States (n = 598), Poland (n = 1000) and Chile (n = 311), we measured participants' Identification With All Humanity and their endorsement of Universalist and Benevolent values as defined by Schwartz and colleagues. In all three studies, when IWAH scores were regressed onto values scores, IWAH scores were significantly (positively) related to the endorsement of Universalism values and were not significantly…

  • The Ambivalent Role of Perceived Low Cultural Distance in Acculturation—A Case of Ukrainian Migrants in Poland

    Open Access•Maria Baran, Marta Boczkowska et al.•ARTICLE•Journal of Cross-Cultural…•2026•Referencias: 76

    This study examines the role of perceived low cultural distance in the acculturation process of Ukrainian women (aged 22–31) who voluntarily migrated to Poland prior to 2019. Through qualitative analysis of 17 in-depth interviews, we explored how perceived cultural similarity between Poland and Ukraine is associated with the experiences of these migrants. Using reflexive thematic analysis, we found that while a perceived low cultural distance is …

  • Emotional Reactions to Protective Policies on the Political Spectrum

    Open Access•Marta Penczek, Katarzyna Hamer•ARTICLE•Statistics Politics and Policy•2025•Citada por: 1•Referencias: 17

    The need for safety is one of the basic human needs. States implement different protective policies to fulfil the task of granting safety to their citizens. Aim of the present study conducted online on a representative sample of Polish citizens ( N = 1,124), was to explore emotions potentially evoked by seven protective policies in the areas of: the economy, social welfare, health, personal security from crime and terrorism, one’s own way of life…

  • Potential changes in ties with people all over the world during the Covid-19 pandemic

    Open Access•Katarzyna Hamer, Marta Boczkowska et al.•ARTICLE•Journal of Social and Political…•2024•Referencias: 12

    The COVID-19 pandemic can be seen as a crisis affecting all humanity. It posed a collective threat, potentially strengthening ties with people all over the world through a feeling of interconnectedness and a common human fate. On the other hand, a sense of physical and psychological threat, competition for scarce resources, and closed national borders may have hindered such ties, worsened the perceptions of people all over the world, and focused …

  • The Identification With All Humanity (Iwah) scale

    Open Access•Yi Feng, Helmut Warmenhoven et al.•ARTICLE•Current Psychology•2023

  • Identification with all humanity—A test of the factorial structure and measurement invariance of the scale in five countries

    Open Access•Katarzyna Hamer, Marta Penczek et al.•ARTICLE•International Journal of Psychology•2021

    Identification with all humanity measured as an individual characteristic is an important factor related to social and international relations, such as concern for global issues and human rights, prosocial attitudes, intergroup forgiveness, attitudes toward immigrants, solving global problems, reactions to hate crimes and dehumanisation. We examine the factorial structure, psychometric properties and measurement invariance of the Identification w…

  • Stand out of my sunlight

    Open Access•Paul Bertin, Kenzo Nera et al.•ARTICLE•Group Processes & Intergroup…•2021•Citada por: 12•Referencias: 8

    Despite the scientific consensus about the anthropogenic nature of climate change, there are still obstacles hindering society from acknowledging the severity of the situation. Notably, previous research suggests that climate change threats can cause people to display ethnocentric reactions to preserve the ingroup’s interests. In this research, we investigate the relation between collective narcissism and attitudes towards climate science. We arg…

  • Seeing the human in everyone

    Open Access•David J Sparkman, Katarzyna Hamer•ARTICLE•International Journal of…•2020•Citada por: 8•Referencias: 42

  • Global Human Identification and Citizenship

    Open Access•Sam Mcfarland, Justin D Hackett et al.•ARTICLE•Political Psychology•2019

    We review psychological research on global human identification and citizenship, Thomas Paine’s belief that “The world is my country, and all mankind are my brethren.” In turn, we review the theoretical foundations that guided our work, research with measures that preceded our own, and our own work with our correlated scales. We review its foundations, its effects upon attitudes and behaviors, and how it might be enlarged. Global human identifica…

  • What Is an “Ethnic Group” in Ordinary People’s Eyes? Different Ways of Understanding It Among American, British, Mexican, and Polish Respondents

    Open Access•Katarzyna Hamer, Sam Mcfarland et al.•ARTICLE•Cross-Cultural Research•2018•Citada por: 7•Referencias: 49

    Although the term “ethnic group” (EG) is often used in social studies, its definition differs among researchers. Moreover, little is known about ordinary people’s subjective understanding of this term, even though it is often used in social discourse. We examined this issue in a cross-sectional study of 273 American, British, Mexican, and Polish students using an open-ended questions approach. Results revealed cultural differences in patterns of …

  • The Influence of the Big Two

    Piotr Radkiewicz, Krystyna Skarżyńska et al.•ARTICLE•Social Psychology•2013•Citada por: 2•Referencias: 23

    The present article concerns the relationship of the Big Two with generalized negative worldviews (i.e., negative beliefs about human nature and pessimistic expectations of interpersonal relationships). Morality/communion and competence/agency - in the form of generalized judgments concerning other people's attributes - may be a substantial basis for formulating negativistic beliefs about the social world. Because people automatically adopt the r…

  • Stand out of my sunlight

    Open Access•Paul Bertin, Kenzo Nera et al.•ARTICLE•Group Processes & Intergroup…•2021•Citada por: 12•Referencias: 8

    Despite the scientific consensus about the anthropogenic nature of climate change, there are still obstacles hindering society from acknowledging the severity of the situation. Notably, previous research suggests that climate change threats can cause people to display ethnocentric reactions to preserve the ingroup’s interests. In this research, we investigate the relation between collective narcissism and attitudes towards climate science. We arg…

  • Seeing the human in everyone

    Open Access•David J Sparkman, Katarzyna Hamer•ARTICLE•International Journal of…•2020•Citada por: 8•Referencias: 42

  • What Is an “Ethnic Group” in Ordinary People’s Eyes? Different Ways of Understanding It Among American, British, Mexican, and Polish Respondents

    Open Access•Katarzyna Hamer, Sam Mcfarland et al.•ARTICLE•Cross-Cultural Research•2018•Citada por: 7•Referencias: 49

    Although the term “ethnic group” (EG) is often used in social studies, its definition differs among researchers. Moreover, little is known about ordinary people’s subjective understanding of this term, even though it is often used in social discourse. We examined this issue in a cross-sectional study of 273 American, British, Mexican, and Polish students using an open-ended questions approach. Results revealed cultural differences in patterns of …

  • The Influence of the Big Two

    Piotr Radkiewicz, Krystyna Skarżyńska et al.•ARTICLE•Social Psychology•2013•Citada por: 2•Referencias: 23

    The present article concerns the relationship of the Big Two with generalized negative worldviews (i.e., negative beliefs about human nature and pessimistic expectations of interpersonal relationships). Morality/communion and competence/agency - in the form of generalized judgments concerning other people's attributes - may be a substantial basis for formulating negativistic beliefs about the social world. Because people automatically adopt the r…

  • Emotional Reactions to Protective Policies on the Political Spectrum

    Open Access•Marta Penczek, Katarzyna Hamer•ARTICLE•Statistics Politics and Policy•2025•Citada por: 1•Referencias: 17

    The need for safety is one of the basic human needs. States implement different protective policies to fulfil the task of granting safety to their citizens. Aim of the present study conducted online on a representative sample of Polish citizens ( N = 1,124), was to explore emotions potentially evoked by seven protective policies in the areas of: the economy, social welfare, health, personal security from crime and terrorism, one’s own way of life…

  • The Influence of the Big Two

    Piotr Radkiewicz, Krystyna Skarżyńska et al.•ARTICLE•Social Psychology•2013•Citada por: 2•Referencias: 23

    The present article concerns the relationship of the Big Two with generalized negative worldviews (i.e., negative beliefs about human nature and pessimistic expectations of interpersonal relationships). Morality/communion and competence/agency - in the form of generalized judgments concerning other people's attributes - may be a substantial basis for formulating negativistic beliefs about the social world. Because people automatically adopt the r…

  • What Is an “Ethnic Group” in Ordinary People’s Eyes? Different Ways of Understanding It Among American, British, Mexican, and Polish Respondents

    Open Access•Katarzyna Hamer, Sam Mcfarland et al.•ARTICLE•Cross-Cultural Research•2018•Citada por: 7•Referencias: 49

    Although the term “ethnic group” (EG) is often used in social studies, its definition differs among researchers. Moreover, little is known about ordinary people’s subjective understanding of this term, even though it is often used in social discourse. We examined this issue in a cross-sectional study of 273 American, British, Mexican, and Polish students using an open-ended questions approach. Results revealed cultural differences in patterns of …

  • Global Human Identification and Citizenship

    Open Access•Sam Mcfarland, Justin D Hackett et al.•ARTICLE•Political Psychology•2019

    We review psychological research on global human identification and citizenship, Thomas Paine’s belief that “The world is my country, and all mankind are my brethren.” In turn, we review the theoretical foundations that guided our work, research with measures that preceded our own, and our own work with our correlated scales. We review its foundations, its effects upon attitudes and behaviors, and how it might be enlarged. Global human identifica…

  • Seeing the human in everyone

    Open Access•David J Sparkman, Katarzyna Hamer•ARTICLE•International Journal of…•2020•Citada por: 8•Referencias: 42

  • Identification with all humanity—A test of the factorial structure and measurement invariance of the scale in five countries

    Open Access•Katarzyna Hamer, Marta Penczek et al.•ARTICLE•International Journal of Psychology•2021

    Identification with all humanity measured as an individual characteristic is an important factor related to social and international relations, such as concern for global issues and human rights, prosocial attitudes, intergroup forgiveness, attitudes toward immigrants, solving global problems, reactions to hate crimes and dehumanisation. We examine the factorial structure, psychometric properties and measurement invariance of the Identification w…

  • Stand out of my sunlight

    Open Access•Paul Bertin, Kenzo Nera et al.•ARTICLE•Group Processes & Intergroup…•2021•Citada por: 12•Referencias: 8

    Despite the scientific consensus about the anthropogenic nature of climate change, there are still obstacles hindering society from acknowledging the severity of the situation. Notably, previous research suggests that climate change threats can cause people to display ethnocentric reactions to preserve the ingroup’s interests. In this research, we investigate the relation between collective narcissism and attitudes towards climate science. We arg…

  • The Identification With All Humanity (Iwah) scale

    Open Access•Yi Feng, Helmut Warmenhoven et al.•ARTICLE•Current Psychology•2023

  • Potential changes in ties with people all over the world during the Covid-19 pandemic

    Open Access•Katarzyna Hamer, Marta Boczkowska et al.•ARTICLE•Journal of Social and Political…•2024•Referencias: 12

    The COVID-19 pandemic can be seen as a crisis affecting all humanity. It posed a collective threat, potentially strengthening ties with people all over the world through a feeling of interconnectedness and a common human fate. On the other hand, a sense of physical and psychological threat, competition for scarce resources, and closed national borders may have hindered such ties, worsened the perceptions of people all over the world, and focused …

  • Emotional Reactions to Protective Policies on the Political Spectrum

    Open Access•Marta Penczek, Katarzyna Hamer•ARTICLE•Statistics Politics and Policy•2025•Citada por: 1•Referencias: 17

    The need for safety is one of the basic human needs. States implement different protective policies to fulfil the task of granting safety to their citizens. Aim of the present study conducted online on a representative sample of Polish citizens ( N = 1,124), was to explore emotions potentially evoked by seven protective policies in the areas of: the economy, social welfare, health, personal security from crime and terrorism, one’s own way of life…

  • Beyond Weird societies

    Open Access•Katarzyna Hamer, Marta Penczek et al.•ARTICLE•Political Psychology•2026

    In an increasingly globalized world challenged by multiple social problems, global social identifications (GSIs, e.g., with all humanity) are concepts of growing interest. Although such identifications can be affected by the cultural contexts in which they are manifested, research on them remains largely confined to Western, Educated, Industrialized, Rich, Democratic (WEIRD) societies. Using data collected in 45 countries ( N = 9807, preregistere…

  • Relationships Between Identification With All Humanity and Universalism and Benevolence

    Open Access•John B Nezlek, Katarzyna Hamer et al.•ARTICLE•International Journal of Psychology•2026

    In three studies conducted in the United States (n = 598), Poland (n = 1000) and Chile (n = 311), we measured participants' Identification With All Humanity and their endorsement of Universalist and Benevolent values as defined by Schwartz and colleagues. In all three studies, when IWAH scores were regressed onto values scores, IWAH scores were significantly (positively) related to the endorsement of Universalism values and were not significantly…

  • The Ambivalent Role of Perceived Low Cultural Distance in Acculturation—A Case of Ukrainian Migrants in Poland

    Open Access•Maria Baran, Marta Boczkowska et al.•ARTICLE•Journal of Cross-Cultural…•2026•Referencias: 76

    This study examines the role of perceived low cultural distance in the acculturation process of Ukrainian women (aged 22–31) who voluntarily migrated to Poland prior to 2019. Through qualitative analysis of 17 in-depth interviews, we explored how perceived cultural similarity between Poland and Ukraine is associated with the experiences of these migrants. Using reflexive thematic analysis, we found that while a perceived low cultural distance is …

Psychology (8 obras) · Cultural Differences and Values (7 obras) · Social Psychology (7 obras) · Social and Intergroup Psychology (6 obras) · Social Psychology (4 obras) · Sociology (4 obras) · Ethnocentrism (3 obras) · Humanity (3 obras) · Political science (3 obras) · Confirmatory factor analysis (2 obras)

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