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Based on previous research on lucid dreaming, we are
inclined to interpret the current results as evidence that it is
an exceptional mental state occurring naturally in the course
of brain maturation. The fact that lucid dreaming is more
pronounced in students of higher level secondary schools
implies that lucid dreaming is linked to the development of
cognitive functions.
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The phenomenon of lucid dreaming is often only vaguely
understood, even by those who claim to have had lucid
dreams in the past. Most studies of lucid dreaming rely on
questionable or not properly validated sources (for a review,
see Gackenbach, 1991). Our own experience shows that
especially online questionnaires, which are currently quite
popular, invite unreliable reports that compare meagerly with
those collected in the laboratory after REM-awakenings or
paper and pencil tests with proper instructions (Voss et al., in
preparation). Accordingly, reports of lucid dream experiences
in adults (at least once in a lifetime) range from 82% (Schredl
and Erlacher, 2004) to 26% (Stepansky et al., 1998) 4 .
In this survey, we found an overall prevalence rate of 52%
which compares well with a recent representative survey by Schredl
and Erlacher (2011), who reported a lifetime prevalence of
51% in adult participants. On the other hand, our group of 18
and 19 year olds had a lifetime prevalence of more than 70%,
which shows how important it is to provide age-related
incidence rates of lucid dreaming. Another shortcoming of
past surveys on lucid dreaming was that they did not
distinguish between past and present lucid dreaming inci-
dence. This was one objective of the current study.
Our findings strongly suggest that, although most adults can
remember having had a lucid dream in the past, they rarely
experience them at present.
Miscellaneous findings
Concerning sleep and dreaming, we found no evidence of a
confounding effect of sleep duration or napping with regard to
either frequency of dream recall or lucid dreaming (Table 5).
We confirmed sex differences in dream recall (Schredl and
Reinhard, 2008), but did not observe an age effect. The
literature in this regard is controversial, some sources cite a
significant decline in older age (Schredl, 2008; Stepansky
et al., 1998), while others do not (Schredl and Piel, 2003;
Schredl and Reinhard, 2008). Because our age range does
not compare with those studies, we refrain from an in-depth
discussion at this point. It appears, however, that young
children in our current survey were as reliable in their dream
reports as their older peers.
Similar to a recent study by Schredl and Erlacher (2011),
but to a lesser degree, frequency of dream recall was
significantly correlated with frequency of lucid dreams,
suggesting that the ability to remember one?s dreams
facilitates lucid dreaming or the memory of it.
Clinical implications
Lucid dreaming is of immense value for the study of conscious
states. We must ask ourselves, however, what the conse-
quences are for our subjects: will training of lucid dreaming
alter cognitive and ⁄or emotional processing capacity in
waking? Can lucid dreaming be applied to clinical settings?
What we have observed in the children and young adults of
the current survey is what seems like a preparedness for
lucid dreaming.
Interestingly, plot control was not automatically coupled with lucid dreaming.
Does this indicate that they do not recognize the possibility? Is that in turn a function
of a Piagetian kind of causality mystery? Do they later learn
it?
Obviously, it is available to frequent lucid dreamers
(Fig. 5), which indicates that plot control must be susceptible
to training. Indeed, several of the interviewed young boys and
girls stated unasked that lucid dreaming commenced at a
time of need when nightmares prevailed.
Narrative 3: (girl, 10): Someone was haunting me. And I
was with my girlfriend. The chaser stood before me and
wanted to kill me. And then I realized it was only a dream.
So I made the person disappear and then suddenly, it
wasn?t dark any more.
Students described lucid dreaming in combination with plot
control as a sort of self-remedy that helped them not only to
sleep through the night but also to achieve a sense of
mastery over their emotions.
This is especially relevant
because plot control was mostly reported in connection with
aggression, violence directed at them, or flying. It is espe-
cially remarkable because these students had no training and
lucid dreaming occurred spontaneously. The present survey
did not assess these aspects systematically, but the asser-
tiveness with which students described their experience with
lucidity leads us to speculate that lucid dreaming may prove
clinically useful in the treatment of children suffering from
anxiety disorders or nightmares.
Lucid dreaming might even prove useful in abating excessive impulsiveness.