Synthesis:Hallucinogen Rating Scale: Difference between revisions

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Somaesthesia
As its name suggests the Hallucinogen Rating Scale (HRS) was designed to assess the effects of hallucinogenic drugs. It comprises 72 items divided into 6 factors.<ref>Riba, J., Rodrı́guez-Fornells, A., Strassman, R. J., & Barbanoj, M. J. (2001). Psychometric assessment of the Hallucinogen Rating Scale. ''Drug and Alcohol Dependence'', ''62''(3), 215. https://doi.org/10.1016/s0376-8716(00)00175-7</ref> Alternatively, a recent updated study proposed "an 8-factor solution comprising 88 of the original 105 HRS items", namely "1) vision, 2) meaningfulness, 3) dysphoria, 4) euphoria, 5) somaesthesia, 6) auditory and minor senses, 7) liking, and 8) volition", showing "good to excellent model fit and internal consistency."<ref>Calder, A. E., Qualls, C., Hasler, G., Elmiger, D., & Strassman, R. (2025). The Hallucinogen Rating Scale: Updated Factor Structure in a Large, Multistudy Sample. ''Biological Psychiatry Global Open Science'', ''5''(2), 100436. https://doi.org/10.1016/j.bpsgos.2024.100436</ref>


A rush
Instructions include:<blockquote>When filling out the HRS, subjects were asked to recall their experiences from the immediately preceding session. Almost all questions were scored 0 to 4: 0,"not at all"; 1, "slightly"; 2, "moderately"; 3, "quite a bit"; and 4, "extremely"<ref name=":0">Strassman, R. J. (1994). Dose-Response Study of N,N-Dimethyltryptamine in Humans: II. Subjective Effects and Preliminary Results of a New Rating Scale. ''Archives of General Psychiatry'', ''51''(2), 98. https://doi.org/10.1001/archpsyc.1994.03950020022002</ref></blockquote>


Change in salivation
== Dimensions, sub-dimensions, and items ==
 
Somaesthesia
Body feels different
 
Change in sense of body weight
 
Feel as if moving falling flying through space
 
Change in body temperature Electric /tingling feeling
 
Pressure or weight in chest or abdomen
 
Shaky feelings inside
 
Feel body shake or tremble
 
Physically restless
 
Sexual feelings
 
Feel removed detached separated from body


* A rush
* Change in salivation
* Body feels different
* Change in sense of body weight
* Feel as if moving falling flying through space
* Change in body temperature Electric /tingling feeling
* Pressure or weight in chest or abdomen
* Shaky feelings inside
* Feel body shake or tremble
* Physically restless
* Sexual feelings
* Feel removed detached separated from body
Affect
Affect
 
* Anxious
Anxious
* Frightened
 
* Feel like laughing
Frightened
* Excited
 
* Awe
Feel like laughing
* Amazement
 
* Safe
Excited
* Feel presence of a numinous force, higher power, God.
 
* Euphoria
Awe
* Change in feelings of closeness to people in room.
 
* Change in "amount" of emotions.
Amazement
* Emotions seem different than usual
 
* Feel of oneness with universe
Safe
* Feel isolated from people and things
 
* Feel reborn
Feel presence of a numinous force, higher power, God.
* Like the experience
 
* How soon would you like to repeat the experience
Euphoria
* Desire for the experience regularly
 
Change in feelings of closeness to people in room.
 
Change in "amount" of emotions.
 
Emotions seem different than usual
 
Feel of oneness with universe
 
Feel isolated from people and things
 
Feel reborn
 
Like the experience
 
How soon would you like to repeat the experience
 
Desire for the experience regularly


Perception
Perception


Flushed
* Flushed
 
* Change in skin sensitivity
Change in skin sensitivity
* A sound or sounds accompanying the experience
 
* Sounds in room sound different
A sound or sounds accompanying the experience
* Change in distinctiveness of sounds
 
* Change in visual distinctiveness of objects in room
Sounds in room sound different
 
Change in distinctiveness of sounds
 
Change in visual distinctiveness of objects in room
 
Visual effects
 
Room looks different
 
Change in brightness of objects in room
 
Room overlaid with visual patterns
 
Eyes open visual field vibrating or jiggling
 
Visual images
 
Kaleidoscopic nature of visual images
 
Difference in brightness of visions compared to usual daylight vision
 
Dimensionality of images
 
Movement within images
 
White light
 
CognitionSense of speed
 
Contradictory feelings at the same time
 
Sence of chaos
 
Change in strength of sense of self
 
New thoughts or insights
 
Change in rate of thinking
 
Change in quality of thinking
 
Difference in feeling of reality of experiences compared to everyday
 
experience
 
Dreamlike nature of the experiences
 
Insights into personal or occupational concerns
 
Change in rate of time passing
 
Change in sense of sanity
 
Volition
 
Urge to close eyes
 
Change in effort of breathing
 
Able to follow the sequence of events
 
Able to “let go”
 
Able to focus attention
 
In control
 
Able to move around if asked to


Able to remind yourself of being in a clinical room, being administered a drug,
* Visual effects
* Room looks different
* Change in brightness of objects in room
* Room overlaid with visual patterns
* Eyes open visual field vibrating or jiggling
* Visual images
* Kaleidoscopic nature of visual images
* Difference in brightness of visions compared to usual daylight vision
* Dimensionality of images
* Movement within images
* White light


the temporary nature of the experience.
Cognition (covers "thought content and processes"<ref name=":0" />)


Intensity
* Sense of speed
* Contradictory feelings at the same time
* Sence of chaos
* Change in strength of sense of self
* New thoughts or insights
* Change in rate of thinking
* Change in quality of thinking
* Difference in feeling of reality of experiences compared to everyday experience
* Dreamlike nature of the experiences
* Insights into personal or occupational concerns
* Change in rate of time passing
* Change in sense of sanity


Amount of time between when the drug was administered and feeling an
Volition (defined as the "wilful ability to interact with one's mental and physical self and the environment"<ref name=":0" />)


effect
* Urge to close eyes
* Change in effort of breathing
* Able to follow the sequence of events
* Able to “let go”
* Able to focus attention
* In control
* Able to move around if asked to
* Able to remind yourself of being in a clinical room, being administered a drug,
* the temporary nature of the experience.


Waxing and waning of the experience
Intensity (defined as "a global measure of robustness of response"<ref name=":0" />)


Intensity
* Amount of time between when the drug was administered and feeling an effect
* Waxing and waning of the experience
* Intensity
* High


High
== References ==

Latest revision as of 12:16, 18 March 2025

As its name suggests the Hallucinogen Rating Scale (HRS) was designed to assess the effects of hallucinogenic drugs. It comprises 72 items divided into 6 factors.[1] Alternatively, a recent updated study proposed "an 8-factor solution comprising 88 of the original 105 HRS items", namely "1) vision, 2) meaningfulness, 3) dysphoria, 4) euphoria, 5) somaesthesia, 6) auditory and minor senses, 7) liking, and 8) volition", showing "good to excellent model fit and internal consistency."[2]

Instructions include:

When filling out the HRS, subjects were asked to recall their experiences from the immediately preceding session. Almost all questions were scored 0 to 4: 0,"not at all"; 1, "slightly"; 2, "moderately"; 3, "quite a bit"; and 4, "extremely"[3]

Dimensions, sub-dimensions, and items

Somaesthesia

  • A rush
  • Change in salivation
  • Body feels different
  • Change in sense of body weight
  • Feel as if moving falling flying through space
  • Change in body temperature Electric /tingling feeling
  • Pressure or weight in chest or abdomen
  • Shaky feelings inside
  • Feel body shake or tremble
  • Physically restless
  • Sexual feelings
  • Feel removed detached separated from body

Affect

  • Anxious
  • Frightened
  • Feel like laughing
  • Excited
  • Awe
  • Amazement
  • Safe
  • Feel presence of a numinous force, higher power, God.
  • Euphoria
  • Change in feelings of closeness to people in room.
  • Change in "amount" of emotions.
  • Emotions seem different than usual
  • Feel of oneness with universe
  • Feel isolated from people and things
  • Feel reborn
  • Like the experience
  • How soon would you like to repeat the experience
  • Desire for the experience regularly

Perception

  • Flushed
  • Change in skin sensitivity
  • A sound or sounds accompanying the experience
  • Sounds in room sound different
  • Change in distinctiveness of sounds
  • Change in visual distinctiveness of objects in room
  • Visual effects
  • Room looks different
  • Change in brightness of objects in room
  • Room overlaid with visual patterns
  • Eyes open visual field vibrating or jiggling
  • Visual images
  • Kaleidoscopic nature of visual images
  • Difference in brightness of visions compared to usual daylight vision
  • Dimensionality of images
  • Movement within images
  • White light

Cognition (covers "thought content and processes"[3])

  • Sense of speed
  • Contradictory feelings at the same time
  • Sence of chaos
  • Change in strength of sense of self
  • New thoughts or insights
  • Change in rate of thinking
  • Change in quality of thinking
  • Difference in feeling of reality of experiences compared to everyday experience
  • Dreamlike nature of the experiences
  • Insights into personal or occupational concerns
  • Change in rate of time passing
  • Change in sense of sanity

Volition (defined as the "wilful ability to interact with one's mental and physical self and the environment"[3])

  • Urge to close eyes
  • Change in effort of breathing
  • Able to follow the sequence of events
  • Able to “let go”
  • Able to focus attention
  • In control
  • Able to move around if asked to
  • Able to remind yourself of being in a clinical room, being administered a drug,
  • the temporary nature of the experience.

Intensity (defined as "a global measure of robustness of response"[3])

  • Amount of time between when the drug was administered and feeling an effect
  • Waxing and waning of the experience
  • Intensity
  • High

References

  1. ↑ Riba, J., Rodrı́guez-Fornells, A., Strassman, R. J., & Barbanoj, M. J. (2001). Psychometric assessment of the Hallucinogen Rating Scale. Drug and Alcohol Dependence, 62(3), 215. https://doi.org/10.1016/s0376-8716(00)00175-7
  2. ↑ Calder, A. E., Qualls, C., Hasler, G., Elmiger, D., & Strassman, R. (2025). The Hallucinogen Rating Scale: Updated Factor Structure in a Large, Multistudy Sample. Biological Psychiatry Global Open Science, 5(2), 100436. https://doi.org/10.1016/j.bpsgos.2024.100436
  3. ↑ 3.0 3.1 3.2 3.3 Strassman, R. J. (1994). Dose-Response Study of N,N-Dimethyltryptamine in Humans: II. Subjective Effects and Preliminary Results of a New Rating Scale. Archives of General Psychiatry, 51(2), 98. https://doi.org/10.1001/archpsyc.1994.03950020022002
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