Appendix A: Questionnaire Items
- If your level in the real world is 100, and your level of presence is 1 if you have no presence, rate your level of presence in this virtual world.
- How strong was you sense of presence, “being there”, in the virtual environment (1-5 scale)
The rating question
If your level of presence in the real world is "100" and your level of presence is "1"' if you lack presence, rate your level of presence in this virtual world (presence is a "feeling of being there"). Enter a number 1-100.
The 13 other presence questions
Subjects were asked to rate each question on scale of 1-5 where 1=poor, 2=fair, 3=good, 4=very good, and 5=excellent.
- How strong was your sense of presence in the virtual environment?
- How strong was your sense of "being there" in the virtual environment?
- How strong was your sense of inclusion in the virtual environment?
- How aware were you of the real world surroundings while moving through the virtual world (i.e., sounds, room temperature, other people, etc.)?
- In general, how realistic did the virtual world appear to you?
- How realistically were you moved through the virtual world?
- With what degree of ease were you able to look around the virtual environment?
- Do you feel that you could have reached into the virtual world and grasped an object?
- What was your overall comfort level in this environment?
- What was your overall enjoyment level in the virtual environment?
Subscales are mentioned after each question. These are: Immersion (IMM), Communication (COM), Involvement (INV), and Awareness (AW). The questionnaire also covered the moderator variables relating to the nature of the environment itself (CVE) together with its user interface (INF) .
- Beside you, how many persons were in the virtual gallery? (Qualitative)
- How stimulating was the design of the virtual world? (CVE)
- How natural was the mechanism, which controlled the actions of your avatar? (INF)
- How responsive were the avatars of other participants to verbal communication that you initiated? (COM)
- How responsive were the avatars of other participants to verbal communication that you initiated? (COM)
- How natural did your communication with other participants seem? (COM)
- How compelling was your sense of being present in a virtual world? (IMM)
- How compelling was your sense of other participants being present? (IMM)
- How credible were the avatars of other participants with respect to representing human beings? (AVA)
- How aware were you of the existence of your own avatar? (AWN)
- How easy was it to distinguish between the avatars of different participants? (AVA)
- How easy was it to control your avatar? (INF)
- How well could you concentrate on communication and the assigned task rather than on the mechanisms used to perform these? (INF)
- Were you involved in communication and the experimental task to the extent that you lost track of time? (IVM)
- To what extent did events occurring outside the virtual gallery distract from your experience in the virtual environment? (IVM)
- I was immediately aware of the existence of other participants. (AWN)
- I was an active participant in the meeting. (IVM)
- I was aware of the actions of other participants. (AWN)
- I enjoyed the virtual gallery experience. (IVM)
- My senses were completely engaged during the experience. (IMM)
- Was it difficult to find a unanimous decision within the group? Did you experience any other difficulties during the experiment? (Please explain.) (Qualitative)
- Did you notice others using means of non-verbal communication, such as gestures? Do you consider them useful in this setting? (Please explain.) (Qualitative)
- Do you think the deployment and appearance of avatars was significant for the virtual gallery experience? (Please explain your answer.) (Qualitative)
- Do you have any other comments on this experiment? (Qualitative)
- How aware were you of the real world surrounding while navigating in the virtual world? (i.e. sounds, room temperature, other people, etc.)?
- How real did the virtual world seem to you?
- I had a sense of acting in the virtual space, rather than operating something from outside.
- How much did your experience in the virtual environment seem consistent with your real world experience ?
- How real did the virtual world seem to you?
- I did not feel present in the virtual space.
- I was not aware of my real environment.
- In the computer generated world I had a sense of "being there"
- Somehow I felt that the virtual world surrounded me.
- I felt present in the virtual space.
- I still paid attention to the real environment.
- The virtual world seemed more realistic than the real world.
- I felt like I was just perceiving pictures.
- I was completely captivated by the virtual world.
Scale anchors vary for each question and can be downloaded at www.igroup.org/pq/ipq
- When the broadcast ended, I felt like I came back to the "real world" after a journey. (Strongly Disagree -- Strongly Agree)
- The television came to me and created a new world for me, and the world suddenly disappeared when the broadcast ended. (Strongly Disagree -- Strongly Agree)
- During the broadcast, I felt I was in the world the television created. (Never -- Always)
- During the broadcast, I NEVER forgot that I was in the middle of an experiment. (Never -- Always; Reversed Scale)
- During the broadcast, my body was in the room, but my mind was inside the world created by television. (Never -- Always)
- During the broadcast, the television-generated world was more real or present for me compared to the "real world." (Never -- Always)
- The television-generated world seemed to me only "something I saw" rather than "somewhere I visited." (Never -- Always; Reversed Scale)
- During the broadcast, my mind was in the room, not in the world created by television. (Never -- Always; Reversed Scale)
- How was your feeling of being present in the real world affected by your hearing loss?
- How was your feeling of being present amongst other people affected by your hearing loss?
- How was your sense of personal existence affected by your hearing loss?
- How was your feeling of being present in an active, changing environment affected by your hearing loss?
- How was your ability to think about your own presence in the real world affected by your hearing loss?
All items were rated on a 5-point scale (much lower – lower – normal – higher – much higher)
- In the computer generated world I had the sense of “being there” (1. Not at all – 7. Very much).
- During the game, how often did you think of the other person(s) in the room with you? (1. Not at all – 7. All the time).
- How flat and missing in depth did the game appear? (1. Not at all – 7. Very much).
- Do you think of the computer-generated world as.. (1. Something that I saw – 7. Somewhere that I visit).
- How much more enjoyable would it have been to use the game with no-one else in the room? (1. No more enjoyable – 7. A great deal more enjoyable).
- How disturbing was the lag or delay between your movements of the controls and the response in the computer-generated world? (1. Didn’t notice it – 7. Completely off-putting).
- Whilst you used the game, music played in the background. How much attention did you pay to it? (1. None at all – 7. A great deal).
- The computer-generated world became more real or present to me compared to the “real world” (1. At no time – 7. Almost all the time).
- How exhilarated did you feel after the experience? (1. Felt normal - 7. Felt really exhilarated).
- How much were you able to control events?
- How responsive was the environment to actions that you initiated (or performed)?
- How natural did your interactions with the environment seem?
- How completely were all of your senses engaged?
- How much did the visual aspects of the environment involve you?
- How much did the auditory aspects of the environment involve you?
- How natural was the mechanism which controlled movement through the environment?
- How aware were you of events occurring in the real world around you?
- How aware were you of your display and control devices?
- How compelling was your sense of objects moving through space?
- How inconsistent or disconnected was the information coming from your various senses?
- How much did your experiences in the virtual environment seem consistent with your real-world experiences?
- Were you able to anticipate what would happen next in response to the actions that you performed?
- How completely were you able to actively survey or search the environment using vision?
- How well could you identify sounds?
- How well could you localize sounds?
- How well could you actively survey or search the virtual environment using touch?
- How compelling was your sense of moving around inside the virtual environment?
- How closely were you able to examine objects?
- How well could you examine objects from multiple viewpoints?
- How well could you move or manipulate objects in the virtual environment?
- To what degree did you feel confused or disoriented at the beginning of breaks or at the end of the experimental session?
- How involved were you in the virtual environment experience?
- How distracting was the control mechanism?
- How much delay did you experience between your actions and expected outcomes?
- How quickly did you adjust to the virtual environment experience?
- How proficient in moving and interacting with the virtual environment did you feel at the end of the experience?
- How much did the visual display quality interfere or distract you from performing assigned tasks or required activities?
- How much did the control devices interfere with the performance of assigned tasks or with other activities?
- How well could you concentrate on the assigned tasks or required activities rather than on the mechanisms used to perform those tasks or activities?
- Did you learn new techniques that enabled you to improve your performance?
- Were you involved in the experimental task to the extent that you lost track of time?
This is the initial version of the questionnaire. Items 4, 8, 9, 11, 22, 24, 31, and 32 were dropped. Items 5, 6, 10, 18, 23, and 32 were included to address involvement in the VE.
- If one’s level of presence in the real world is 100%, rate your level of presence in this virtual world.
- How strong was your sense of presence?
- Did you feel you could reach into the virtual environment and grasp an object?
- How realistic did the virtual world appear?
- How realistic were depth and volume?
- How realistic were the virtual world’s reactions to your actions?
- When exploring the virtual space, did the objects appear too compressed or too magnified?
- Did the virtual objects appear geometrically correct, did they seem to have the right size and distance in relation to yourself and other objects?
Overall, how would you rate the sense of presence generated by the environment?
Overall, how would you rate the degree of realism achieved by the virtual environment?
Items 1-8 are rated on a 4-point scale: 0 (none), 1 (2-50%), 2 (50-75%), 3 (75-100%). The two general items are rated on a 5-point scale (Very satisfactory – Moderately satisfactory – Neutral – Moderately unsatisfactory – Very unsatisfactory)
- How clear was what you saw in the virtual world?
- To what extent what you saw in the virtual world was similar to reality?
- To what extent could you predict or anticipate what you were going to see in the virtual world?
- How clear were the sounds in the virtual world?
- To what extent what you heard in the virtual world was similar to reality?
- To what extent could you predict or anticipate what you were going to hear in the virtual world?
- To what extent did you feel bodily sensations in the virtual world (heat, cold, etc.)?
- To what extent could you predict or anticipate the bodily sensations you were going to feel in the virtual world?
- To what extent did you feel you “were” physically in the virtual world?
- To what extent were your perceptions in the virtual world (visual, somatic, etc) congruent?
- In your opinion, how was the quality of the images in the virtual world?
- To what extent did you experience things you were not expecting to happen in the virtual world?
- To what extent did things in the virtual world have impact on you?
- To what extent what you experienced in the virtual world fitted the information you had about what was going to happen?
- To what extent what you experienced in the virtual world fitted your expectations about what could happen in a virtual world?
- To what extent what you experience in the virtual world was a fiction?
- To what extent did you feel you “went into” the virtual world?
- To what extent did the experience seem real to you?
- To what extent did you feel as a passive spectator in the virtual world?
- To what extent did you feel as an active participant in the virtual world?
- To what extent did the virtual world respond to your actions?
- To what extent do you trust in the information computers offer you?
- To what extent do you believe the computer (virtual reality system) could trick you?
- To what extent were the voices or other perception from outside the virtual world congruent to what you were experiencing in the virtual world?
- Do you believe other people similar to you could have an experience similar to yours in the virtual world?
- Do you believe the virtual world was able to induce emotions?
- To what extent did the virtual world make you feel emotions (anxiety, sadness, happiness, etc.)?
- To what extent did you feel emotionally involved in the virtual experience?
- To what extent did you wish to let yourself be carried by the virtual world?
- To what extent did you feel like you “went into” the virtual world, and you almost forgot about the world outside?
- To what extent did you find easy to manipulate the joystick, mouse, etc?
- To what extent did your interactions with the virtual world seem natural to you, like in the real world?
- To what extent was your experience in the virtual world a challenge to you?
- To what extent were the objects present in the virtual world?
- To what extent was the experimenter/therapist present in the experience?
- To what extent could you interact with the virtual world?
- How real did the virtual objects seem to you?
- To what extent what you experienced in the virtual world was congruent to other experiences in the real world?
- To what extent what you experienced in the virtual world was different to other experiences you had in the real world?
- To what extent could you move around the virtual world?
- To what extent did your movements in the virtual world seem natural to you?
- To what extent did the mechanisms which controlled your movements in the virtual world seem natural to you?
- To what extent did the mechanism which controlled your movements let you move in a natural way in the virtual world?
- To what extent was there a delay between your actions and their effects in the virtual world?
- To what extent was difficult to you to “go into” the virtual world?
- To what extent was easy to you to get used to the virtual world?
- To what extent did the experience imply a mental effort to you?
- To what extent did you have to pay a lot of attention about what was going on in the virtual world?
- To what extent did the experience make you learn anything?
- To what extent did you feel you have initiative to do things in the virtual world?
- To what extent did the actions and events in the virtual world have continuity, like in a movie?
- To what extent did you feel you have control over the experience?
- Do you believe you could finish the virtual experience at your will?
- To what extent did your actions produce changes in the virtual world?
- Did you assume/play a role while experiencing the virtual environment?
- To what extent were you yourself while experience the virtual environment?
- To what extent did you feel you had to play a role in the virtual world?
- To what extent do you believe the virtual system had initiative?
- To what extent could you accurately estimate the time you spent in the virtual world?
- To what extent were the events in the virtual world congruent to your actions?
- To what extent did you feel it was necessary to devote all your attention to what you were doing in the virtual world?
- To what extent did you feel self-satisfaction while experiencing the virtual environment?
- To what extent did the virtual experience seem satisfying/reinforcing to you?
- To what extent did you get bored while experiencing the virtual world?
- To what extent did you have a good time while experiencing the virtual world?
- To what extent did you feel disappointed while experiencing the virtual world?
- To what extent would you like to repeat the virtual experience?
- To what extent did the virtual experience lack sensations?
- To what extent did the virtual experience lack emotions?
- To what extent did you forget you were in a room wearing a helmet?
- To what extent did the virtual experience seem more like a computer game, an entertainment?
- To what extent did the quality of the images in the virtual world influence how real the experience seemed to you?
- To what extent did what you heard and the quality of the sound in the virtual world influence how real the experience seemed to you?
- To what extent did the bodily sensations you felt in the virtual world influence how real the experience seemed to you?
- To what extent did the bodily sensations influence how into the virtual world you went?
- To what extent did the sounds influence how into the virtual world you went?
- To what extent did the quality of the images influence how into the virtual world you went?
The final version of the questionnaire contains 18 items in 3 scales: Reality Judgment (items 2, 9, 11, 17, 18, 32, 37, 38), Internal/External Correspondence (items 21, 36, 40, 54, 56, 60), and Attention/Absorption (30, 48, 61, 70).
- Please rate your sense of being in the virtual environment, on a scale of 1 to 7, where 7 represents your normal experience of being in a place.
- To what extent were there times during the experience when the virtual environment was the reality for you?
- When you think back to the experience, do you think of the virtual environment more as images that you saw or more as somewhere that you visited?
- During the time of the experience, which was the strongest on the whole, your sense of being in the virtual environment or of being elsewhere?
- Consider your memory of being in the virtual environment. How similar in terms of the structure of the memory is this to the structure of the memory of other places you have been today? By ‘structure of the memory’ consider things like the extent to which you have a visual memory of the virtual environment, whether that memory is in colour, the extent to which the memory seems vivid or realistic, its size, location in your imagination, the extent to which it is panoramic in your imagination, and other such structural elements.
- During the time of your experience, did you often think to yourself that you were actually in the virtual environment?
- How natural was the interaction with the environment? (P)
- To what extent were you able to identify sounds? (SQ)
- To what extent were you able to identify sounds? (SQ)
- To what extent were you aware of things happening around you, outside the Virtual Environment? (EA)
- To what extent did you feel you were present in the Virtual Environment? (P)
- To what extent did you feel disoriented or confused in the Virtual Environment? (Q)
- How involved were you in the experience? (P)
- To what extent did you think it was enjoyable to interact in the Virtual Environment? (E)
- How much did the sound add to the perceived realism? (SQ)
- To what extent did you focus your attention on the situation, rather than on other things? (EA)
- To what extent did you think that the things you did and saw happened naturally and without much mental effort? (P)
- To what extent did you find the Virtual Environment fascinating? (E)
- I felt nauseous (S)
- My eyes felt strained (S)
- I had a headache (S)
- I had problems concentrating (S)
- I felt unpleasant (S)
E = enjoyment, SQ = sound quality, P = presence, EA = external awareness, S = simulator sickness.
Items assessing perceived other’s copresence:
- My interaction partner was intensely involved in our interaction.
- My interaction partner seemed to find our interaction stimulating.
- My interaction partner communicated coldness rather than warmth.
- My interaction partner created a sense of distance between us.
- My interaction partner seemed detached during our interaction.
- My interaction partner was unwilling to share personal information with me.
- My interaction partner made our conversation seem intimate.
- My interaction partner created a sense of distance between us.
- My interaction partner created a sense of closeness between us.
- My interaction partner acted bored by our conversation.
- My interaction partner was interested in talking to me.
- My interaction partner showed enthusiasm while talking to me.
Items assessing self-reported copresence:
- I did not want a deeper relationship with my interaction partner.
- I wanted to maintain a sense of distance between us.
- I was unwilling to share personal information with my interaction partner.
- I wanted to make the conversation more intimate.
- I tried to create a sense of closeness between us.
- I was interested in talking to my interaction partner.
All items are rated on a 5-point scale (Strongly disagree – Disagree – Neither agree nor disagree – Agree – Strongly agree)
Items assessing collaboration:
- To what extent did you experience that you and your partner collaborated?
- Think of some previous time (before today) when you enjoyed collaborating with someone. To what extent did you enjoy collaborating with your partner in today’s task?
- To what extent would you, on another occasion, like to carry out a similar task with your partner?
Items assessing contribution to the task:
- How would you estimate your and your partner’s share in solving the task?
- To what extent did you and your partner contribute to placing the cubes?
- Who talked the most, you or your partner?
Items assessing presence:
- To what extent did you have the experience of being in the same room as the cubes?
- When you think back on the task, to what extent can you have the experience right now that you are moving around in the room where the cubes were?
- To what extent did you experience the environment as a place you visited rather than something that you were looking at?
Items assessing copresence:
- To what extent did you have a sense of being in the same room as your partner?
- When you continue to think back on the task, to what extent do you have a sense that you are together with your partner in the same room?’’.
All items are rated on a 5-point scale (1= to a very small extent, 5= to a very high extent).
- I perceive that I am in the presence of another person in the room with me.
- I feel that the person is watching me and is aware of my presence.
- The thought that the person is not a real person crosses my mind often.
- The person appears to be sentient (conscious and alive) to me.
- I perceive the person as being only a computerized image, not as a real person.
- To what extent, if at all, did you have a sense of being with the other person?
- To what extent were there times, if at all, during which the computer interface seemed to vanish, and you were directly working with the other person?
- When you think back about your experience, do you remember this as more like just interacting with a computer or working with another person?
- To what extent did you forget about the other person, and concentrate only on doing the task as if you were the only one involved?
- To what extent were you and the other person in harmony during the course of the performance of the task?
- Think about a previous time when you cooperatively worked together with another person in order to move or manipulate some real thing in the world (for example, shifting some boxes, lifting luggage, moving furniture, and so on). To what extent was your experience in working with the other person on this task today like that other real experience, with regard to your sense of doing something together?
- During the time of the experience, did you often think to yourself that you were just manipulating some screen images with a pen-like device, or did you have a sense of being with another person?
- Overall rate the degree to which you had a sense that there was another human being interacting with you, rather than just a machine?
- Messages in GlobalEd were impersonal
- CMC is an excellent medium for social interaction
- I felt comfortable conversing through this text-based medium
- I felt comfortable introducing myself on GlobalEd
- The introduction enabled me to form a sense of online community
- I felt comfortable participating in GlobalEd discussions
- The moderators created a feeling of online community
- The moderators facilitated discussions in the GlobalEd conference
- Discussions using the medium of CMC tend to be more impersonal than face-to-face discussion
- CMC discussions are more impersonal than audio conference discussions
- CMC discussions are more impersonal than video teleconference discussions
- I felt comfortable interacting with other participants in the conference
- I felt that my point of view was acknowledged by other participants in GlobalEd
- I was able to form distinct individual impressions of some GlobalEd participants even though we communicated only via a text-based medium.
These are only the items addressing social presence. In total, the questionnaire contains 61 items.
Items assessing co-presence:
Isolation/ Aloneness
- I often felt as if I was all alone.
- I think the other individual often felt alone.
Mutual Awareness
- I hardly noticed another individual.
- The other individual didn’t notice me in the room.
- I was often aware of others in the environment.
- Others were often aware of me in the room.
- I think the other individual often felt alone.
- I often felt as if I was all alone.
Attentional Allocation
- I sometimes pretended to pay attention to the other individual.
- The other individual sometimes pretended to pay attention to me.
- The other individual paid close attention to me
- I paid close attention to the other individual.
- My partner was easily distracted when other things were going on around us.
- I was easily distracted when other things were going on around me.
- The other individual tended to ignore me.
- I tended to ignore the other individual.
Items assessing Psychological Involvement:
Empathy
- When I was happy, the other was happy.
- When the other was happy, I was happy.
- The other individual was influenced by my moods.
- I was influenced by my partner’s moods.
- The other’s mood did NOT affect my mood/emotional-state.
- My mood did NOT affect the other’s mood/emotional-state.
Mutual Understanding
- My opinions were clear to the other.
- The opinions of the other were clear.
- My thoughts were clear to my partner.
- The other individual’s thoughts were clear to me.
- The other understood what I meant.
- I understood what the other meant.
Items assessing Behavioral Engagement:
Behavioral Interdependence
- My actions were dependent on the other’s actions.
- The other’s actions were dependent on my actions.
- My behavior was in direct response to the other’s behavior.
- The behavior of the other was I direct response to my behavior.
- What the other did affected what I did.
- What I did affected what the other did.
Mutual Assistance
- My partner did not help me very much.
- I did not help the other very much.
- My partner worked with me to complete the task.
- I worked with the other individual to complete the task.
Dependent Action
- The other could not act without
- I could not act with the other.
Items assessing Immediacy/Intimacy:
- ABC.com created a sense of closeness with me.
- I felt close to ABC.com.
- ABC.com created a sense of distance.
- I felt that ABC.com was aloof in its interactions with me.
- I found ABC.com to be very detached from me.
- ABC.com was very impersonal in its dealings with me.
- I found ABC.com to be very detached in its interactions with me.
Items assessing Sense of Understanding:
- ABC.com did not understand my needs.
- ABC.com understood what I wanted.
- ABC.com knows me well.
- ABC.com understood my goals.
- ABC.com understood what I was trying to do.
- ABC.com had no clue as to what I really wanted.
- ABC.com does not know my desires at all.
Items assessing Positivity (Items under development):
- ABC.com is likeable.
- ABC.com is pleasant.
- ABC.com is unfriendly.
- ABC.com is fun.
- I have positive feelings about ABC.com.
Items assessing Involvement:
- ABC.com keeps me totally absorbed in my interactions with it.
- I was deeply involved in my interactions while shopping at ABC.com.
- ABC.com holds my attention.
- I was completely interested in what I was doing while browsing ABC.com.
- ABC.com failed to keep me involved while I was shopping.
- ABC.com excites my curiosity.
- ABC.com aroused my imagination.
Items assessing Dominance:
- ABC.com tried hard to persuade me.
- I felt that ABC.com was very assertive.
- ABC.com influenced me a great deal.
- ABC.com influenced my decisions.
- I felt that ABC.com was pushy.
- I felt that ABC.com controlled the interaction.
- ABC.com was aggressive in trying to influence me.
- ABC.com was over-selling its products/services/ideas.
- My memories for (R,V,I) objects are: 1 = black & white; 7 = entirely color
- My memories for (R,V,I) configurations are: 1 = very fuzzy; 7 = very sharp/clear
- My view of (R,V,I) configurations seemed: 1 = unrestricted; 7 = restricted.
- My memories for (R,V,I) events involve visual detail: 1 = none; 7 = a lot
- For (R,V,I) events, I remember only the positions of objects (as opposed to the whole configuration). 1 = strongly disagree; 7 = strongly agree
- During (R,V,I) events, the whole configuration was easy to view at one time. 1 = strongly disagree; 7 = strongly agree
- My memories for (R,V,I) configurations seem: 1 = divided; 7 = whole
- My memories for (R,V,I) configurations are: 1 = incomplete; 7 = complete
- During the Identification Of Origin Test, I had to reconstruct the pieces of the (R,V,I) events from memory. 1 = strongly disagree; 7 = strongly agree
- During (R,V,I) events, identifying the global shape of a configuration was: 1 = very difficult; 7 = very easy
- I remember that the amount of concentration during (R,V,I) events was: 1 = none; 7 = a lot
- I remember being distracted by the surroundings during (R,V,I) events: 1 = never; 7 = always
- During the Identification Of Origin Test, my general level of confidence in the accuracy of my (R,V,I) answers was: 1 = just guessing; 7 = very sure
- My memories for (R,V,I) events are: 1 = very weak; 7 = very strong
- I remember feeling disoriented during (R,V,I) events. 1 = strongly disagree; 7 = strongly agree
- My sense of "being there" for (R,V,I) events was: 1 = none; 7 = a lot
- (R,V,I) events seemed more like: 1 = something that I saw; 7 = some place that I visited
- During (R,V,I) events, I remember being a: 1 = spectator; 7 = participant
- I remember being surrounded by objects during (R,V,I) events. 1 = strongly disagree; 7 = strongly agree
- For (R,V,I) events, I was aware of my body. 1 = strongly disagree; 7 = strongly agree
- How similar are your Real and Imagined memories? 1 = very different; 7 = very similar.
How similar are your Real and Virtual memories? 1 = very different; 7 = very similar
How similar are your Imagined and Virtual memories? 1 = very different; 7 = very similar
R = Real, V = Virtual, I = Imagined.
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