Paweł Kleka

Adam Mickiewicz University | UAM · Department of Psychology and Cognition

The main aim of this paper is to provide some practical guidance to researchers on how statistical power analysis can be used to estimate sample size in empirical design. The paper describes the key assumptions underlying statistical power analysis and illustrates through several examples how to determine the appropriate sample size. The examples u...

Niniejszy plik zawiera tekst przyjęty do publikacji w piśmie "Homo Ludens" (po recenzjach i pracy redakcyjnej), w wersji do wczesnego cytowania. This is an early citation version of a text accepted for publication in the journal "Homo Ludens" (after peer reviews and editorial work). Gamifying science – the issue of data validation 1 Homo Ludens 1/(...

Applied psychology for the last 70 years is dominated by only one psychometric approach based on the Classical Test Theory, although the measure is considered a key element of research. This approach (CTT) is connected with a few restrictions of research tools: the tendency to long scales, the interpretation of the results depends on standardizatio...

Praca ta przybliża metodę metaanalizy naukom społecznym, wskazując na konieczność zamieszczania istotnych z jej punktu widzenia parametrów statystycznych w tekście naukowym, tak by informacje w nim zawarte pozwalały uwzględnić wyniki badań w szerszym kontekście. W pierwszej części artykułu opisano proces planowania metaanalizy oraz wymieniono niezb...

Wskaźniki zamachów samobójczych wśród osób przebywających w jednostkach penitencjarnych wciąż pozostają wyższe w porównaniu z osobami w podobnym wieku i tej samej płci, które pozostają na wolności. Prowadzenie skutecznych oddziaływań profilaktycznych staje się zatem jednym z kluczowych wyzwań, jeśli chodzi o ograniczania tego rodzaju zachowań. W zw...

RAN (Rapid Automatized Naming) is known to be a robust predictor of reading development in different languages. Much less is known about RAN predictive power in bilingual contexts. This is the first meta-analysis of research with bilingual children, assessing the strength of the RAN-reading relationship both within and across languages. It also exp...

In the midst of today’s COVID-19 pandemic, attitudes towards psychological online interventions (POI) in both the general population and many healthcare target groups could become crucial information for healthcare providers. Acceptability of POIs is seen as an important factor contributing to the effectiveness of the implementation online help in...

Objective: This study, rooted in narrative psychology, examined the effectiveness of the proactive self-narrative diary intervention for adults’ mental health during the COVID-19 pandemic. Methods: Four hundred twenty-four people aged 18 to 45 were recruited and divided into three groups: ‘narrative’, ‘descriptive’, and ‘control’. On three consecut...

The current article reports data from three Polish samples to examine the Relationship Assessment Scale (RAS) with respect to its unidimensionality, invariance across countries, gender, formal and informal relationships, degree of precision (or information) across latent levels of relationship satisfaction, and the functioning of individual items....

This study aims to assess the validity and reliability of the Polish version of the Sport Anxiety Scale-2, as well as to determine the relationship between anxiety and goal orientation among high-performance and recreational athletes. A total of 519 athletes aged M = 22.83 (SD = 4.92) participated in the study, including 266 males and 253 females....

The question of the conformance of a researcher’s features to the stereotype of a scientist is rarely addressed in the context of scientific research. We decided to examine its significance in two experiments involving women and men in which the persons conducting the experiment had features respectively conforming and not conforming to the stereot...

Background and objectives: Anxiety is a dominant emotion in schizophrenia. It is most often diagnosed by questionnaire-based methods. In this study, it was decided to analyse the utterances of patients with schizophrenia for the occurrence of lexical indicators of anxiety, which are a good predictor of experienced anxiety and lie beyond the subjec...

Purpose: Most stroke patients require long-term care of their family members. Excessive care burden entails several negative consequences; therefore, the severity of the burden should be periodically assessed. For this purpose, valid multidimensional measures are needed. Our study, which is a part of a larger research project, aims to translate an...

Tematyka podejmowana w tej pracy jest odzwierciedleniem trwającej obecnie na świecie w środowisku psychometrów i psychologów dyskusji na temat jakości psychologii jako nauki (w 2018 roku powołano dwie organizacje zrzeszające dyskutujących o tym psychologów i psychometrów: Psychological Science Accelerator, Society for the Improvements of Psychologi...

Background: Depression remains an important health problem among older adults and it may be correlated with the deterioration of physical fitness, whose chief indicator is hand grip strength (HGS). The aim of the study was to investigate the relationship between depression and HGS among older populations using the available literature. Methods:...

Motivational factors are among the most important determinants of undertaking and participating in physical activity. An adequate measurement of motivation and the assessment of its initial characteristics form the basis for possible further practical interventions of a compensatory or promotional nature. Considering the above, the main aim of this...

While Liepmann was one of the first researchers to consider a relationship between skilled manual actions (praxis) and language for tasks performed “freely from memory”, his primary focus was on the relations between the organization of praxis and left-hemisphere dominance. Subsequent attempts to apply his apraxia model to all cases he studied – in...

Using functional magnetic resonance imaging (fMRI), we studied links between manual praxis (planned and executed tool use pantomimes), language (in subvocal word generation task) and handedness in 125 participants, including righthanders (N=52), ambidextrous individuals (mixedhanders; N=31), and lefthanders (N=42). The tested sample included 64 fe...

The aim of the present study was to examine the relationship between styles of sense of humour and parental attitude. The study sample consisted of adults who are parents, mostly women (59 vs 14 men). Because the study was exploratory in nature, a statistical significance level of α < .10 was adopted and tentatively demonstrated the existence of pa...

Interpersonal communication is a dynamic, complex process, and is conditioned by many factors, among which one of the most important roles is played by the personality of interaction partners. The article presents results of research on the influence of extraversion and emotional intelligence on selected aspects of communication when the process is...

Background: Depression remains an important health problem among older adults. Disorders in older age result from the accumulation of various factors, chief among them somatic diseases, stressful life events, social isolation, unfavorable social attitudes towards older people, declined cognitive function, malnutrition, polypharmacy. Depression may...

Purpose: The main aim of this study was to analyse the psychometric properties of the Polish version of the Multiple Sclerosis Self-Management-Revised Scale. Methods: A total of 663 patients with multiple sclerosis were included in this study. The Polish version of the Multiple Sclerosis Self-Management-Revised Scale, The General Self-Efficacy S...

The main aim of the study is a comprehensive assessment of psychometric properties of the Polish version of Perception of Success Questionnaire (POSQ) in sport. Apart from standard psychometric evaluation, the paper presents an analysis of item reliability through the use of Item Response Theory, as well as the analysis of relationships between spo...

The main aim of the study was to assess the psychometric properties of the Polish version of the task and ego orientation in sport questionnaire (TEOSQ). The study covered 651 athletes aged 19.2 years, SD (Standard deviation) = 2.21. The task and ego orientation in sport questionnaire (TEOSQ) and sport motivation scale (SMS-28) were used. Cronbach’...

The performance of learned manual gestures (praxis) and the production of speech are thought to depend on related neural processes. If this relationship is not invoked by an unknown, third variable then shifts in their laterality, including dissociations of these two functions, would be unlikely unless the sharing of some neural resources with othe...

Introduction: In recent years a steady increase in the number of obese people has been observed worldwide. This problem is also increasingly applicable to children and adolescents. In this study, we conducted a meta-analysis of studies carried out in Poland over ten years (2005-2015) which analysed the diet of preschool children and assessed how s...

The current longitudinal developmental study was designed to determine whether awareness of one’s own biases (the metacognitive self, MCS) emerges and develops during the developmental period known as emerging adulthood. To this end, we followed almost 400 undergraduate university students (18–23 years) over the first three years of their studies,...

This longitudinal study was designed to test the hypothesis that the strength of metacognitive self would predict the level of motivation to obtain self-diagnostic information. We begin by defining the construct of metacognitive self as a cognitive-motivational concept that pertains to the individuals’ self-awareness of biases. We then discuss the...

Trafność percepcji własnych zachowań jest obarczona licznymi błędami i dość niska. Dorośli ludzie szybciej i trafniej zobaczą błąd w zachowaniu obserwowanych obcych osób niż analogiczny błąd we własnym zachowaniu (Brycz 2004). Podobnie trafność przewidywania swoich przyszłych sukcesów nie jest wysoka i często przeszacowa-na. Badania sponsorowane pr...

Background: Auscultation is one of the first examinations that a patient is subjected to in a GP's office, especially in relation to diseases of the respiratory system. However it is a highly subjective process and depends on the physician's ability to interpret the sounds as determined by his/her psychoacoustical characteristics. Here, we present...

The aim of this article is to present the theoretical motivational background regarding metacognitive self, which is being aware of how biases and psychological rules (like classic conditional) influence one's own behavior. Based on this framework, we used a Polish nationwide representative sample to create a reliable tool (the first study: n = 120...

The book is a manual for the method of executive functions assessment based on the Dimensional Change Card Sorting which was originally published by P. D. Zelazo in 2006. The Children Card Sort has been standardized and normalized for Polish speaking children aged between 3 and 11 years. It is a sample of the task-switching paradigm used for assess...

Background In our study we decided to examine whether anxiety defined in personality terms and various emotional states, including the state of fear, measured in two ways – by means of subjective rating scales and by means of a more objective method, the Facial Action Coding System (FACS) developed by Ekman, Friesen, and Hager – would affect emotio...

background The aim of the study was to identify the patterns of two types of faking the results of a self-report study – faking good and faking bad – and to determine their relationships with the images obtained as a result of completing a ques- tionnaire in accordance with the standard instructions and therefore regarded as subjectively true. We i...

Recently, extensive studies investigating executive functions in children with specific language impairment (SLI) have been performed. In the present study, we compared the level of executive functions (i.e., inhibitory control and cognitive flexibility) and literacy skills between 53 healthy children and 53 children with SLIs between the ages of 3...

The article analyses relationship patterns as predictors of relationship status (having vs not having a partner) among female university students. Inner relationship patterns were identified on the basis of written statements on significant relations. The statements were obtained through the Relationship Anecdotes Paradigm (RAP), which allows the a...

The creation of abridged versions of research tools is a common, justifiable process, but unfortunately it is often carried out without due methodological care and regard for the consequences. Smith and collaborators (2000) have already written about the mistakes that can be made, but their article has not had much practical impact. There are two m...

Bazując na założeniach teoretycznych i wynikach badań empirycznych w artykule zaprezentowano autorski kwestionariusz do pomiaru funkcjonalnego aspektu kompetencji negocjacyjnych. W oparciu o wyniki uzyskane na próbie 331 osób (N = 217 (66%) kobiet oraz N = 114 (34%) mężczyzn, w wieku od 22 do 61 (56 dla kobiet) i średnim wieku 31.7 (SD = 7.70), gdz...

Introduction and objective: The aim of the study was to evaluate the effect of treatment on the quality of life (QoL) in postmenopausal women characterized by the reduced BMD. Material and methods: Postmenopausal women (n=102), mean age (65.09±5.6 years) were included in this study. The participants were divided into two groups, depending on the t...

Annoyance has a negative influence on health and well-being, and over a longer time, it can increase the risk of stress, sleep disturbance, obesity and even heart attacks. The aim of this paper was to investigate the influence of audio-visual information on the assessment of annoyance caused by wind turbines. Seven soundscapes and seven landscapes...

The creation of abridged versions of research tools is a common, justifiable process, but unfortunately it is often carried out without due methodological care and regard for the consequences. Smith and collaborators (2000) have already written about the mistakes that can be made, but their article has not had much practical impact. There are two m...

The present work addresses the identification and qualitative assessment of errors that appear in a free-drawn clock-drawing test representing the time 8:20 in a sample of 455 children and adolescents with neurological diseases and their controls. The authors sought to verify whether the occurrence of particular errors in the clock drawings signifi...

In this article, on the basis of questionnaire data collected for other purposes, the Authors want to show the consequences of various methods of shortening of tests and what may result from such an action for diagnosticians, researchers and examined individuals. The research aim of the work is to show the best method of shortening of the scale of...

Artykuł dotyczy kwestii godzenia studiów z pracą zawodową. Studenci, zdając sobie sprawę z faktu znaczenia doświadczenia praktycznego, podejmują się nie tylko staży, czy wolontariatów, ale i pełnowymiarowych form zatrudnienia w przyszłym zawodzie. W efekcie stają przed zadaniem godzenia nauki z poważnym zobowiązaniem zawodowym. Celem artykułu jest...

Summary. The main goal of the article is to present the current stage of work on the Spontaneity-Reactivity Scale (S-RS). The Scale serves as an assessment of the extent to which children in preschool and younger school age are ready to learn under the guidance of a teacher. The increase in reactivity of the child and the decline of his spontaneity...

Aim. Aim of this research was to determine whether di erences in clinical picture of psy- chopathy (on the basis of which subtypes of psychopathy are identi ed) re ect di erences in pathology of personality organization (integration) according to O. Kernberg. Method. The research was conducted on 417 subjects, of whom 88.5% were criminals, 11.5% –...

Aim. Aim of this research was to determine whether di erences in clinical picture of psy- chopathy (on the basis of which subtypes of psychopathy are identi ed) re ect di erences in pathology of personality organization (integration) according to O. Kernberg. Method. The research was conducted on 417 subjects, of whom 88.5% were criminals, 11.5% –...

Cancer is not an individual experience- it also concerns the family. Informal caregivers may experience health issues associated with the burden of caregiving. One of the factors of the health status of family carers is social support. The following poster describes a new research tool to diagnose the social support provided by family members. The...

Introduction: Caregivers of demented relatives devote their time and attention in order to help the beloved members of the family. Those who are informal caregivers require support in order to avoid being overburdened. Many such caregivers may suffer from chronic health problems, for instance, depression. Objective: The aim was to assess the fac...

Annoyance ratings for artificially created noises, resembling the main characteristics of temporal wind turbine noise, were studied by means of a listening experiment involving 21 participants with normal hearing. Three types of stimuli were examined: broadband noise (−4 dB/octave), noise generated by moving cars, and narrowband noise. All stimuli...

In the initial version of the paper starting on page 43 of this volume, the authors Paweł Łupkowski and Paweł Kleka had been omitted. The correct affiliation should be: Paweł Lubarski\(^1\), Paweł Łupkowski\(^2\), Paweł Kleka\(^2\), and Mikołaj Morzy\(^1\) \(^1\)Institute of Computing Science Poznan University of Technology Piotrowo 2, 60-965 Pozna...

Selected Determinants of Interpersonal Communication in Negotiation – between Openness and Manipulation Tarpasmeninės komunikacijos derybose veiksniai – tarp atvirumo ir manipuliacijos This theoretical and empirical article is dedicated to issues concerning communication in negotiation and the analysis of selected determinants. The authors have ass...

In the paper steps of Literacy Assessment Battery (LAB) construction were described. The battery is based on the theory of Lev S. Vygotsky. Following his theses literacy acquisition is a process of development of higher order mental function named written speech. This process begins long before a start of reading and writing instruction. Results of...

The paper describes school readiness in grades I-III according to initial entry age to school. Authors approach contemporary understanding of literacy development from the angle of Vygotsky’s view on cultural-historical psychology. From this perspective reading and writing are seen as two manifestations of a single higher mental function – written...

Opis moich doświadczeń z rozwijaniem funkcji, które pozwalają na automatyczne formatowanie wyników obliczeń statystycznych wg standardów APA obowiązujących w mojej dziedzinie naukowej (psychologia).

Summary Objectives:The aim of paper was to explore the attitudes of Polish psychology students towards lesbian mothers whose children undergo psychological intervention, in an imaginary situation of providing professional support to the child. The authors found 3 types of psychologist behaviour: contact omission (withdrawal from the intervention, m...

General annoyance is a complex quantity. It is a combination of, among other things, “general well being”, disturbance during sleep and rest, problems with listening to TV and radio, interruption of conversation, etc. The hypothesis for this study is that the intelligibility of speech is so tied up with general annoyance that the two quantities are...

Background It is essential to adjust oncological treatment to medical procedures but also to the expectations of patients themselves. Expectations of patients may depend on the way of coping with the stress of cancer. Many researchers have dealt with this issue. However, it is difficult to find studies concerning relations between the styles of cop...

Introduction: The aim of this study was to assess the costs associated with mild hypertension (HTN) in Poland and to compare the costs of 3-year ambulatory care for those diagnosed with mild HTN (group A) and those diagnosed with mild HTN and comorbidities (group B). Material and methods: The researchers undertook a retrospective study of a group o...

It is essential to adjust oncological treatment to medical procedures but also to the expectations of patients themselves. Expectations of patients may depend on the way of coping with the stress of cancer. Many researchers have dealt with this issue. However, it is difficult to find studies concerning relations between the styles of coping and exp...

The study aimed to determine the risk factors for reduced bone mineral density (BMD) among postmenopausal women. Two hundred and fifty-three postmenopausal women were included to the study. The study group consisted of 85 women with osteoporosis (mean age: 59.9 years) and 168 with osteopenia (mean age: 57.8 years). Patients were assigned to groups...

This research investigates the applicability of F. Davis' Technology Acceptance Model (TAM) to OCR-based CAPTCHAs involved in a free e-mail accounts registration process. The results provide preliminary evidence that the model may be a useful tool for research focused on acceptance of CAPTCHAs. The results are especially interesting when it comes t...

Evaluation of the quality of life of patients with osteoporosis concerns the physical, emotional, social and pain quality of life domains. The aim of the research was to describe the psychometric properties of the Polish version of QUALEFFO-41 in 253 Polish postmenopausal women with osteopenia or osteoporosis and in 132 postmenopausal women with no...

The Maslach Burnout Inventory-General Survey: validation across different occupational groups in Poland This paper concerns the psychometric evaluation of the Polish version of a self-report questionnaire to measure burnout. Although the Maslach Burnout Inventory (MBI) is the most commonly employed measure of burnout, researchers have been troubled...

To evaluate the reliability and validity of the Polish version of the Arthritis Impact Measurement Scales (AIMS-2) in Polish patients with rheumatoid arthritis (RA). The reliability of the Polish questionnaire was assessed by internal consistency of health-status scales. Construct validity was assessed by factor analysis and convergent validity by...

Introduction: Recently our knowledge about quality of life and its measurements allows us to present the scale of health-related quality of life (HRQL) which includes physical functioning, psychical functioning, social functioning and also other symptoms related to the disease and its treatment. The aim of the study was to evaluate quality of life...

One of the most important problems in sleep medicine is Sleep Related Breathing Disorder and Insomnia. The excessive daytime sleepiness is basic symptom of those disorders. In this study we analyze some parameters of insomnia severity and excessive daytime sleepiness among smoking and nonsmoking teachers. In this study we used the own questionnaire...

Rheumatoid arthritis (RA) is a chronic connective tissue disease with characteristic symmetric joints infibulations leading to disability. Due to progressive character of the disease, with periods of worsening and remission, the treatment should be complex and focused on the inhibition of the progress of the changes. The aim of the study was opinio...

Unlabelled: Smoking cigarettes is one of the most common factor disturbing health and a part of negative life style. The aim of the study was to estimate the frequencies of smoking cigarettes and their conditions among teachers of all types of schools--primary as well as secondary. 94 persons participated in the study. 20.2% of them were smoking a...