Sakari Lemola
Biographic Data
| ID | 1562566 |
|---|---|
| NAME | Sakari Lemola |
| GIVEN NAMES | Sakari |
| FAMILY NAME | Lemola |
| SIGNATURE | LEMOLA S |
| AFFILIATIONS | Bielefeld University |
| ORCID | 0000-0002-1314-6194 |
| VERIFIED | Yes |
| TOTAL WORKS | 20 |
| TOTAL CITATIONS | 36 |
| WORKS AS AUTHOR | 20 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2007 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Anthropometric differences between twins at birth and their association with later cognitive performance
BACKGROUND: Past studies indicate significant associations between birth anthropometrics, such as relative birthweight or head circumference, and later cognitive performance. Using twin data, we investigated whether these associations are confounded by genetic and environmental factors. Additionally, we determined whether the association of within twin differences in birth anthropometrics and cognitive performance is nonlinear or moderated by fac…
Mapping Life Satisfaction Over the First Years of Cohabitation Among Former Singles Living Alone in UK and Germany
Objective As social norms and relationship dynamics evolve, it is important to examine how transitions from singlehood to partnership, cohabitation, and marriage relate to well‐being. Method Using data from two large panel studies in the UK and Germany (1984–2019), we identified N = 27,459 individuals who reported being single and living alone at least once. Analyses focused on a subset ( N = 1103; M age = 38.35, SD age = 13.87; 43.8% women) who …
Interactions between infant characteristics and parenting factors rarely replicate across cohorts and developmental domains
BACKGROUND: Whether, and how, infant characteristics and parenting quality interact is one of developmental psychology's key questions. However, whether specific interaction patterns replicate across cohorts or developmental outcomes is largely unknown. This study investigates whether infant characteristics and parenting quality are independent predictors (additive effects) of child outcomes or interact such that certain infants particularly suff…
Post-migration stress mediates associations between potentially traumatic peri-migration experiences and mental health among Middle Eastern refugees in Germany
On their way to host countries, refugees are often exposed to severe adversity, including cumulative experiences of fraud, extortion, robbery, detention, and shipwrecks, as well as prolonged, life-threatening small boat crossings. However, little research has examined the long-term impact of such peri-migration stressors on subsequent stress and mental health after arrival. This study explored how cumulative exposure to potentially traumatic even…
An interdisciplinary linked-lives approach to individual differences in social behaviour
Entwicklungspsychologie des Kindes- und Jugendalters für Bachelor
The influence of sleep on subjective well-being
Previous research has associated sleep with subjective well-being (SWB), but less is known about the underlying within-person processes. In the current study, we investigated how self-reported and actigraphy-measured sleep parameters (sleep onset latency, sleep duration, sleep satisfaction, social jetlag, and sleep efficiency) influence SWB (positive affect [PA], negative affect [NA], and life satisfaction [LS]) at the within- and between-person …
Temporal associations between objectively measured physical activity and depressive symptoms
Individuals with higher levels of depressive symptoms may benefit from physical activity. While the effects were strongest for physical activity immediately before the mood ratings, the effects were in the same direction for up to 3 h before the mood ratings
The Role of the Context of Physical Activity for Its Association with Affective Well-Being
Physical activity and being outdoors both improve affective well-being. However, little is known about the synergistic effects between them and the influences of contextual factors such as the life domain of physical activity (work-, chores-, leisure, or sports-related) or the type of the outdoor environment (green space, blue space, or city area) on mood. This study investigates the synergistic effects of physical activity and being outdoors as …
Personality traits relate to chronotype at both the phenotypic and genetic level
INTRODUCTION: Diurnal preferences have been linked to personality but often with mixed results. The present study examines the relationships between sleep timing (chronotype), diurnal preferences, and the Five-Factor Model of personality traits at the phenotypic and genetic level. METHODS: = 45.76 years; 59% females). Genetic correlations were obtained through summary statistics of genome-wide association studies. RESULTS: Results showed that hig…
Can a ‘rewards-for-exercise app’ increase physical activity, subjective well-being and sleep quality? An open-label single-arm trial among university staff with low to moderate physical activity level…
The study suggests that mobile incentives-for-exercise applications might increase physical activity levels, positive affect, and sleep quality, at least in the short term. The observed changes were not sustained 12 months after the end of the trial
Bedtime social media use, sleep, and affective wellbeing in young adults
BACKGROUND: Findings from primarily cross-sectional studies have linked more extensive social media use to poorer sleep and affective wellbeing among adolescents and young adults. This study examined bedtime social media use, sleep, and affective wellbeing, using an experience sampling methodology with the aim of establishing a day-to-day temporal link between the variables. The study hypothesized a positive association between increased bedtime …
Comparison of Blood Pressure and Kidney Markers between Adolescent Former Preterm Infants and Term Controls
Our study confirms an inverse sex-dependant relationship between birth weight and BP at adolescent age. The higher serum creatinine and NGAL in the preterm group may indicate that premature birth affects kidney function in the long term
During early and mid-adolescence, greater mental toughness is related to increased sleep quality and quality of life
The aim of this study was to explore the association between mental toughness, subjective sleep, physical activity, and quality of life during early and mid-adolescence. A total of 1475 participants (mean age = 13.4 years; range: 11-16 years) took part in the study. They completed questionnaires related to mental toughness, physical activity, subjective sleep, and quality of life. Greater mental toughness was related to more favorable quality of …
Adolescents’ Electronic Media Use at Night, Sleep Disturbance, and Depressive Symptoms in the Smartphone Age
Institutional rearing is associated with lower general life satisfaction in adulthood
Trajectories of physical growth and personality dimensions of the Five-Factor Model
Although physical growth in early life is associated with the risk of somatic illnesses and psychological disorders in adulthood, few studies have focused upon the associations between growth and dimensional personality traits. We examined the associations between pre- and postnatal growth in height, weight, and body mass index (BMI) and Five-Factor Model dimensions in adulthood. From the Helsinki Birth Cohort Study, 1,682 participants completed …
The Course of Subjective Sleep Quality in Middle and Old Adulthood and Its Relation to Physical Health
Around retirement, a transient increase in subjective sleep quality appears to occur, which might reflect a decrease in work-related distress. Perceived physical health appears to be important for subjective sleep quality in old adults but not more important than at younger age
Infant irritability
Objectives: The aim of this study was to investigate the impact of fetal alcohol exposure, maternal depressive symptoms, and low emotional support from the husband on infant irritability in the first one and a half years of life. Four models describing the interplay of these factors were assessed: A direct effect model, an interaction or threshold model, a mediational model and a transactional model. Method: A sample of initially 458 women was as…
Smoking Cessation during Pregnancy and Relapse after Childbirth
Adolescents’ Electronic Media Use at Night, Sleep Disturbance, and Depressive Symptoms in the Smartphone Age
Trajectories of physical growth and personality dimensions of the Five-Factor Model
Although physical growth in early life is associated with the risk of somatic illnesses and psychological disorders in adulthood, few studies have focused upon the associations between growth and dimensional personality traits. We examined the associations between pre- and postnatal growth in height, weight, and body mass index (BMI) and Five-Factor Model dimensions in adulthood. From the Helsinki Birth Cohort Study, 1,682 participants completed …
The Course of Subjective Sleep Quality in Middle and Old Adulthood and Its Relation to Physical Health
Around retirement, a transient increase in subjective sleep quality appears to occur, which might reflect a decrease in work-related distress. Perceived physical health appears to be important for subjective sleep quality in old adults but not more important than at younger age
During early and mid-adolescence, greater mental toughness is related to increased sleep quality and quality of life
The aim of this study was to explore the association between mental toughness, subjective sleep, physical activity, and quality of life during early and mid-adolescence. A total of 1475 participants (mean age = 13.4 years; range: 11-16 years) took part in the study. They completed questionnaires related to mental toughness, physical activity, subjective sleep, and quality of life. Greater mental toughness was related to more favorable quality of …
Institutional rearing is associated with lower general life satisfaction in adulthood
Infant irritability
Objectives: The aim of this study was to investigate the impact of fetal alcohol exposure, maternal depressive symptoms, and low emotional support from the husband on infant irritability in the first one and a half years of life. Four models describing the interplay of these factors were assessed: A direct effect model, an interaction or threshold model, a mediational model and a transactional model. Method: A sample of initially 458 women was as…
Smoking Cessation during Pregnancy and Relapse after Childbirth
Infant irritability
Objectives: The aim of this study was to investigate the impact of fetal alcohol exposure, maternal depressive symptoms, and low emotional support from the husband on infant irritability in the first one and a half years of life. Four models describing the interplay of these factors were assessed: A direct effect model, an interaction or threshold model, a mediational model and a transactional model. Method: A sample of initially 458 women was as…
The Course of Subjective Sleep Quality in Middle and Old Adulthood and Its Relation to Physical Health
Around retirement, a transient increase in subjective sleep quality appears to occur, which might reflect a decrease in work-related distress. Perceived physical health appears to be important for subjective sleep quality in old adults but not more important than at younger age
Trajectories of physical growth and personality dimensions of the Five-Factor Model
Although physical growth in early life is associated with the risk of somatic illnesses and psychological disorders in adulthood, few studies have focused upon the associations between growth and dimensional personality traits. We examined the associations between pre- and postnatal growth in height, weight, and body mass index (BMI) and Five-Factor Model dimensions in adulthood. From the Helsinki Birth Cohort Study, 1,682 participants completed …
Institutional rearing is associated with lower general life satisfaction in adulthood
Adolescents’ Electronic Media Use at Night, Sleep Disturbance, and Depressive Symptoms in the Smartphone Age
During early and mid-adolescence, greater mental toughness is related to increased sleep quality and quality of life
The aim of this study was to explore the association between mental toughness, subjective sleep, physical activity, and quality of life during early and mid-adolescence. A total of 1475 participants (mean age = 13.4 years; range: 11-16 years) took part in the study. They completed questionnaires related to mental toughness, physical activity, subjective sleep, and quality of life. Greater mental toughness was related to more favorable quality of …
Bedtime social media use, sleep, and affective wellbeing in young adults
BACKGROUND: Findings from primarily cross-sectional studies have linked more extensive social media use to poorer sleep and affective wellbeing among adolescents and young adults. This study examined bedtime social media use, sleep, and affective wellbeing, using an experience sampling methodology with the aim of establishing a day-to-day temporal link between the variables. The study hypothesized a positive association between increased bedtime …
Comparison of Blood Pressure and Kidney Markers between Adolescent Former Preterm Infants and Term Controls
Our study confirms an inverse sex-dependant relationship between birth weight and BP at adolescent age. The higher serum creatinine and NGAL in the preterm group may indicate that premature birth affects kidney function in the long term
Personality traits relate to chronotype at both the phenotypic and genetic level
INTRODUCTION: Diurnal preferences have been linked to personality but often with mixed results. The present study examines the relationships between sleep timing (chronotype), diurnal preferences, and the Five-Factor Model of personality traits at the phenotypic and genetic level. METHODS: = 45.76 years; 59% females). Genetic correlations were obtained through summary statistics of genome-wide association studies. RESULTS: Results showed that hig…
Can a ‘rewards-for-exercise app’ increase physical activity, subjective well-being and sleep quality? An open-label single-arm trial among university staff with low to moderate physical activity level…
The study suggests that mobile incentives-for-exercise applications might increase physical activity levels, positive affect, and sleep quality, at least in the short term. The observed changes were not sustained 12 months after the end of the trial
Temporal associations between objectively measured physical activity and depressive symptoms
Individuals with higher levels of depressive symptoms may benefit from physical activity. While the effects were strongest for physical activity immediately before the mood ratings, the effects were in the same direction for up to 3 h before the mood ratings
The Role of the Context of Physical Activity for Its Association with Affective Well-Being
Physical activity and being outdoors both improve affective well-being. However, little is known about the synergistic effects between them and the influences of contextual factors such as the life domain of physical activity (work-, chores-, leisure, or sports-related) or the type of the outdoor environment (green space, blue space, or city area) on mood. This study investigates the synergistic effects of physical activity and being outdoors as …
The influence of sleep on subjective well-being
Previous research has associated sleep with subjective well-being (SWB), but less is known about the underlying within-person processes. In the current study, we investigated how self-reported and actigraphy-measured sleep parameters (sleep onset latency, sleep duration, sleep satisfaction, social jetlag, and sleep efficiency) influence SWB (positive affect [PA], negative affect [NA], and life satisfaction [LS]) at the within- and between-person …
Entwicklungspsychologie des Kindes- und Jugendalters für Bachelor
Interactions between infant characteristics and parenting factors rarely replicate across cohorts and developmental domains
BACKGROUND: Whether, and how, infant characteristics and parenting quality interact is one of developmental psychology's key questions. However, whether specific interaction patterns replicate across cohorts or developmental outcomes is largely unknown. This study investigates whether infant characteristics and parenting quality are independent predictors (additive effects) of child outcomes or interact such that certain infants particularly suff…
Post-migration stress mediates associations between potentially traumatic peri-migration experiences and mental health among Middle Eastern refugees in Germany
On their way to host countries, refugees are often exposed to severe adversity, including cumulative experiences of fraud, extortion, robbery, detention, and shipwrecks, as well as prolonged, life-threatening small boat crossings. However, little research has examined the long-term impact of such peri-migration stressors on subsequent stress and mental health after arrival. This study explored how cumulative exposure to potentially traumatic even…
An interdisciplinary linked-lives approach to individual differences in social behaviour
Anthropometric differences between twins at birth and their association with later cognitive performance
BACKGROUND: Past studies indicate significant associations between birth anthropometrics, such as relative birthweight or head circumference, and later cognitive performance. Using twin data, we investigated whether these associations are confounded by genetic and environmental factors. Additionally, we determined whether the association of within twin differences in birth anthropometrics and cognitive performance is nonlinear or moderated by fac…
Mapping Life Satisfaction Over the First Years of Cohabitation Among Former Singles Living Alone in UK and Germany
Objective As social norms and relationship dynamics evolve, it is important to examine how transitions from singlehood to partnership, cohabitation, and marriage relate to well‐being. Method Using data from two large panel studies in the UK and Germany (1984–2019), we identified N = 27,459 individuals who reported being single and living alone at least once. Analyses focused on a subset ( N = 1103; M age = 38.35, SD age = 13.87; 43.8% women) who …
Psychology (15 works) · Medicine (12 works) · Developmental psychology (11 works) · Clinical Psychology (8 works) · Social Psychology (8 works) · Psychiatry (7 works) · Sleep and related disorders (6 works) · Behavioral Health and Interventions (5 works) · Clinical Psychology (5 works) · Internal Medicine (5 works)