Nils Sandman

Nils Sandman
University of Turku | UTU · Division of Psychology

PhD: Psychology

About

22
Publications
4,038
Reads
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375
Citations
Introduction
I am a researcher with scientific interest in sleep and health, choice architecture interventions (nudges) and environmental psychology. At the moment I work at CLIMATE NUDGE project (https://ilmastotuuppaus.fi/en/climate-nudge/) investigating psychological factors relating to climate change. Additionally, I have a wide interest in human mind and our place in the world. This has led to academic pursuits in evolutionary psychology, philosophy of mind and popularization of science.
Additional affiliations
January 2020 - July 2020
University of Helsinki
Position
  • Visiting Researcher
January 2018 - December 2020
University of Turku
Position
  • Postdoc
January 2011 - December 2017
University of Turku
Position
  • PhD Student
Education
January 2011 - November 2017
University of Turku
Field of study
  • Psychology

Publications

Publications (22)
Article
Full-text available
To investigate the prevalence of nightmares among the Finnish general adult population during 1972-2007 and the association between nightmare prevalence and symptoms of insomnia, depression, and anxiety in World War II veterans. Eight independent cross-sectional population surveys of the National FINRISK Study conducted in Finland in 1972, 1977, 19...
Article
Full-text available
Study Objectives: To identify risk factors for experiencing nightmares among the Finnish general adult population. The study aimed to both test whether previously reported correlates of frequent nightmares could be reproduced in a large population sample and to explore previously unreported associations. Design: Two independent cross-sectional pop...
Article
Full-text available
Being bullied by peers at school is associated with numerous intrapersonal, interpersonal, and health problems. Depression is one of the strongest correlates of victimization and, although it may precede victimization, there is convincing evidence of victimization leading to later depression. Victimization has also been found to be related to sleep...
Article
Full-text available
We used crowdsourcing (CS) to examine how COVID-19 lockdown affects the content of dreams and nightmares. The CS took place on the sixth week of the lockdown. Over the course of 1 week, 4,275 respondents (mean age 43, SD = 14 years) assessed their sleep, and 811 reported their dream content. Overall, respondents slept substantially more (54.2%) but...
Article
According to previous research, interest in BDSM (Bondage-Discipline, Dominance-Submission and Sadomasochism) activities is high in several European countries and various BDSM practices are not uncommon. There is a limited amount of research on the personalities of BDSM practitioners, but in previous research practitioners have been found to have b...
Article
To understand how anesthetics with different molecular mechanisms affect consciousness, we explored subjective experiences recalled after responsive and unresponsive sedation induced with equisedative doses of dexmedetomidine, propofol, sevoflurane, and S-ketamine in healthy male participants (N = 140). The anesthetics were administered in experime...
Article
Full-text available
What happens in the brain when conscious awareness of the surrounding world fades? We manipulated consciousness in two experiments in a group of healthy males and measured brain activity with positron emission tomography. Measurements were made during wakefulness, escalating and constant levels of two anesthetic agents (Experiment 1, n=39) and duri...
Article
Study objectives: The diagnosis of a nightmare disorder is based on clinically significant distress caused by the nightmares, e.g., sleep or mood disturbances during the day. The question what factors might be associated with nightmare distress in addition to nightmares frequency is not well studied. Methods: Overall, 1474 persons (893 women, 58...
Preprint
Full-text available
Nightmares are vivid, extended and extremely dysphoric dreams that awaken the dreamer. Twin studies indicate that nightmare frequency has a heritability between 36 and 51% providing evidence for genetic factors underlying predisposition to nightmares. Furthermore, while cross-sectional epidemiological findings suggest that heavy alcohol usage, trau...
Article
Finnish language review about nightmares and their significance to well-being.
Article
Full-text available
There are several different approaches to analyze event-related potentials (ERPs) at single-subject level, and the aim of the current study is to provide information for choosing a method based on its ability to detect ERP effects and factors influencing the results. We used data from 79 healthy participants with EEG referenced to mastoid average a...
Article
The Dark Triad (i.e., Machiavellianism, narcissism, and psychopathy) of personality has been associated with behaviors that facilitate a fast life history strategy, such as aggressiveness and increased interest in sex. In this online study (N = 265), we investigated the possibility that these personality traits have an association with dream conten...
Article
The Dark Triad (i.e., Machiavellianism, narcissism, and psychopathy) of personality has been associated with behaviors that facilitate a fast life history strategy, such as aggressiveness and increased interest in sex. In the present on-line study (N = 265), we investigated the possibility that these personality traits have an association with drea...
Article
Background: Studying the effects of anaesthetic drugs on the processing of semantic stimuli could yield insights into how brain functions change in the transition from wakefulness to unresponsiveness. Here, we explored the N400 event-related potential during dexmedetomidine- and propofol-induced unresponsiveness. Methods: Forty-seven healthy sub...
Article
Full-text available
The aim of this study was to compare the emotional content of dream reports collected at home upon morning awakenings with those collected in the laboratory upon early and late rapid eye movement (REM) sleep awakenings. Eighteen adults (11 women, seven men; mean age = 25.89 AE 4.85) wrote down their home dreams every morning immediately upon awaken...
Article
Full-text available
Nightmares are intensive dreams with negative emotional tone. Frequent nightmares can pose a serious clinical problem and in 2001, Tanskanen et al. found that nightmares increase the risk of suicide. However, the dataset used by these authors included war veterans in whom nightmare frequency - and possibly also suicide risk - is elevated. Therefore...
Article
Full-text available
Sleep problems, especially nightmares and insomnia, often accompany depression. This study investigated how nightmares, symptoms of insomnia, chronotype and sleep duration associate with seasonal affective disorder, a special form of depression. Additionally, it was noted how latitude, a proxy for photoperiod, and characteristics of the place of re...
Article
Introduction Nightmares are emotionally negative intense dreams and a relatively common phenomenon. Most people experience occasional idiopathic nightmares which are completely benign, but frequent nightmares are associated with mental health problems and increased suicide risk and can be a serious mental health issue. The current research investig...

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Projects

Project (1)
Project
We use behavioral insight methods to reduce water consumption of Turku Student Village Foundation tenants. We use a randomized controlled trial design to study the efficacy of the intervention during an 8 month period. https://osf.io/m5p9q