heiDOK (Heidelberg University)
2009
Michael Schredl, Angelika Bocklage, Judith Engelhardt et al.
14 citations
Hartmann’s Boundary questionnaire was developed based on research regarding the personality of nightmare sufferers. Previous research showed that boundary thinness was not only related to openness to experience but also quite strongly to neuroticism. The aim of the present study was to develop a questionnaire measuring boundaries not related to neuroticism. The Boundary Personality...
heiDOK (Heidelberg University)
2009
Daniel Erlacher
9 citations
The study of lucid dreams is a very sophisticated method to explore the ongoing dream from a first person perspective. The present study explores the ability of lucid dreamers to recall previously learned words in their dreams. For this field study 12 lucid dreamers finished the experimental protocol in a home setting. The results indicate that lucid dreamers are able to recall about 5 out of 7...
heiDOK (Heidelberg University)
2009
Valérie Schäfer, Klaus Bader
6 citations
Summary. There is ample evidence that bad dreams and post-traumatic nightmares are a common consequence of exposure to traumatic events both among children and adults. The aim of the present study was to examine to what extent early-life maltreatment experiences are associated with dreams even many years later in adulthood. 37 patients suffering from primary insomnia recorded their dreams for...
heiDOK (Heidelberg University)
2009
Michael Schredl
5 citations
Laboratory research indicated lower dream recall in children compared to young adults. However, the sample sizes of these studies are very small and the findings regarding home dream recall in larger studies are conflicting. The present study compared home dream recall frequency of 558 children (mean age about 10 yrs.) with a sample of young adults (mean age about 23 yrs) and found a marked...
heiDOK (Heidelberg University)
2008
71 citations
This paper addresses the correlation of dreamed and actual actions. This issue is related to the theory of neural simulation of action. The simulation theory postulates that, in general, covert actions are actual actions relying on the same brain regions, except for the fact that they are not executed. By reviewing studies conducted in the field of dream and lucid dream research on REM sleep it...
heiDOK (Heidelberg University)
2008
Victor I. Spoormaker
59 citations
Nightmares are a prevalent mental disorder resulting in disturbed sleep, distress, and impairment in daily functioning. Elaborating on previous theoretical models for anxiety disorders, sleep disorders and dreaming, this study introduces a cognitive model of recurrent nightmares, the central element of which concerns representation of the nightmare’s repetitive storyline in the memory as a...
heiDOK (Heidelberg University)
2008
Michael Schredl
49 citations
Incorporation of laboratory elements into dreams elicited in the sleep laboratory is a methodological problem, i.e., the measurement technique affects unwittingly the object of measurement (dream content). On a theoretical level, the occurrence of laboratory references, however, fits in the framework of the continuity hypothesis of dreaming. Reviewing the literature revealed that there is a...
heiDOK (Heidelberg University)
2008
20 citations
The present study investigated the incidence of lucid dreaming within a Japanese university student sample. From 153 Japanese students 47% reported experiencing a lucid dream at least once and 19% were frequent lucid dreamers (frequency equal or higher than once a month). Dream recall frequency was significantly related to lucid dream frequency. In the Japanese sample the incidence of lucid...
heiDOK (Heidelberg University)
2008
Michael Schredl
5 citations
In clinical praxis, the question as to whether it is possible – based on a dream report – to make any inferences about the characteristics of the dreamer often arises. For the present study, gender was selected for the matching task. The judges were able to match the dreamer’s gender based on a single dream report better than chance. The rate of correct decisions (57.5% to 64%), however, was...
heiDOK (Heidelberg University)
2008
Erin J. Wamsley, John S. Antrobus
2 citations
It has long been known that dream recall, along with various other features of dreaming, changes as a function of time of night. Yet the processes which might account for these time-dependent variations remain obscure. Here we assess the contribution of homeostatic and circadian factors to the generation of NREM mentation across the diurnal cycle. Assuming that previously reported time-of-night...