Source note why this source deserves trust or caution
Wikipedia: Sleep
At a glance
Why this source matters to the answer
This page is here for readers who want to look underneath the guide. It explains what this source is, why it deserves trust or caution, and what question it helps settle before you open the original document.
Trust note
What this source is and what it can support
Summary
General encyclopedia page on sleep used only for orientation.
Why this source matters
Wikipedia: Sleep is included only as a background reference. It is a general encyclopedia page written by volunteers, not a medical guideline or research paper, so it cannot carry the factual parts of the answer about child bedtime.
This source is rated mixed quality because it is useful for quick orientation but not reliable enough for proof. It can help explain basic terms such as sleep stages, but that is not the main task of this guide.
The page should not be used to establish age-based sleep needs, nap effects, or the influence of screens and bright light. Those points are supported by the guideline, review, and study sources in this set.
In this answer, Wikipedia functions only as a public-facing orientation source. It is not proof-eligible and does not belong in the evidence chain for the bedtime recommendations.
Author, publisher, and institution context: Wikipedia is a collaboratively edited encyclopedia page maintained by volunteer contributors. It can be useful for quick orientation, but it does not have the authority of a guideline, review, or primary study.
What to look at in the source
Relevant parts
- General definition of sleep
- Basic explanation of REM and non-REM sleep
- Overview of sleep as a recurring biological state
Key findings
- Useful only for general sleep orientation.
- Not a medical authority.
- Not proof-eligible for this guide.
Notable wording from the source
Sleep is a state of reduced mental and physical activity in which consciousness is altered and certain sensory activity is inhibited.
During sleep, there is a marked decrease in muscle activity and interactions with the surrounding environment.
How much weight to give it
For most readers, the main question is not how this source is classified internally. It is whether this source deserves real weight in the answer. This one is best treated as a mixed quality other source.
This source is not used to support any factual claim in the guide. It is kept only for orientation and should not be cited for age-based sleep guidance, nap effects, or screen/light effects.
The page is useful only as a general introduction and because it reflects a commonly encountered public reference. It is not trustworthy enough to support the child-bedtime recommendations on its own.
This was present in the search set and can help explain what readers may already know about sleep as a general concept. It is retained only as lightweight orientation and not as proof for the answer.
Limits to keep in mind
- Tertiary source.
- Volunteer-edited and variable in quality.
- No direct support for the child-bedtime answer.