Presence Questionnaire Research Articles

The Influence of Immersion on Situational Awareness in a Virtual Environment

Abstract Researchers have pointed out the need to find an alternative to subjective questionnaires to measure presence in a virtual environment. Situational awareness has been proposed to objectively measure the concept of presence. However, the link between situational awareness and specific factors of presence has not been established. To study this relationship, 60 participants executed a driving task in a virtual environment under different visual conditions while we measured their situational awareness with the situational awareness global assessment technique (SAGAT), and their presence with the presence questionnaire (PQ). During the driving task, we objectively and meaningfully manipulated immersion, a factor of presence, by varying our participants' contrast sensitivity, size of the field of view, and visual acuity. The meaningful manipulation of presence also allowed us to evaluate the functional thresholds of the three aforementioned visual qualities for a driving task, which were previously measured from a multidirectional selection test. Our results indicated a significant positive correlation between SAGAT and PQ. They also showed that SAGAT was sensitive to an immersion's degradation and brought a good diagnosticity on the effect of an immersion's manipulation. Consequently, we conclude that it could represent an objective alternative to subjective questionnaires to measure presence in a virtual environment. Moreover, our assessment of the functional thresholds allowed us to confirm that they were context dependent. Our results indicated that only the contrast sensitivity functional threshold was valid in both a multidirectional selection test and a driving task.

Sensory Analysis Performed within Augmented Virtuality System: Impact on Hedonic Scores, Engagement, and Presence Level.

Sensory analysis methodologies are performed in sensory booths designed to minimise external stimuli, lacking ecological validity. Immersive environments are used to introduce contextual cues, but there is a lack of studies using mixed reality systems. The main goal of this study was to evaluate an augmented virtuality (AV) system where participants are inserted into a virtual environment and evaluate a real product, being able to interact with both dimensions. A panel of 102 consumers evaluated five samples of commercial peach nectars in three sessions, each in a different environment: public food court, living room (AV environments), and laboratory (traditional sensory booth). Consumers rated overall liking, followed by open comments, and also answered an Engagement (EQ) and a Presence Questionnaire (PQ). The type of environment only affected hedonic discrimination among samples, with the laboratory setting being the only one with sample discrimination. Nonetheless, each sample was not evaluated differently across the different environments. Concerning engagement, the environment only significantly influenced the EQ's 'Affective Value' factor, being higher when using an AV system. The level of presence in the virtual environment was significantly higher in the public food court, being significantly correlated with the EQ factor scores.

Practicing requirements elicitation in a serious game: comparison between non-immersive and immersive virtual reality

One of the biggest problems in teaching Requirements Engineering at universities is the lack of access to real projects, which could allow students to interact with stakeholders and practice communication skills while conducting requirements elicitation. This article presents a serious game for practicing requirements elicitation through guided interviews with stakeholders. Two versions of the game were developed. The Immersive VR game was designed to run on mobile phones with Google Cardboard. A Non-Immersive version was also developed to run on Windows. Systematic literature reviews point out a lack of immersive VR games for learning Software Engineering. Moreover, the game proposed here is a pioneer in the addressed subject, including the use of low-cost technologies, such as Google Cardboard. The game was tested for 20 minutes by 46 students in two classes of the Bachelor's Degree in Software Engineering. After the test in the first class, the game was improved, and another test was conducted. The purpose of the validation was to verify the sense of presence among the students through a presence questionnaire (PQ). The highest averages were identified in the non-immersive version. For the immersive version, the statistically significant lowest evaluated values pertained to movement within the environment and the feeling of disorientation at the end of the experience. This indicates the need for improvements regarding movement. The literature suggests two directions: the first is to reduce the duration of experimentation with immersive environments, and the second suggests exploring alternative mechanisms for movement within the environment. It is important to remember that the students experimented with their own mobile phones, that is, they did not use dedicated VR equipment. Therefore, it can be concluded that developing VR solutions for these devices requires more restrictive decisions.

Effects of virtual reality guided meditation in older adults: the protocol of a pilot randomized controlled trial.

Virtual reality (VR) based meditation has been shown to help increase relaxation and decrease anxiety and depression in younger adults. However, this has not been studied in Randomized Controlled Trials (RCT) in the older adult population. The aim of this RCT is to assess the feasibility and acceptability of a VR-guided meditation intervention for community-dwelling older adults and its effect on stress and mental health. We will recruit 30 participants aged ≥ 60 years, whose perceived stress score (PSS) is > 14 (moderate stress), and randomize them 1:1 to the intervention or control waitlist group. The intervention will involve exposure to eight 15-min VR-guided meditation sessions distributed twice weekly for 4-weeks. Two modalities will be offered: in-home and at the hospital. Baseline and post-intervention assessments will evaluate perceived stress, anxiety, depression, sleep quality, quality of life, and mindfulness skills. Analyses will employ mixed methods repeated ANOVA tests. Qualitative analyses through semi-structured interviews and participant observation will be used to assess participants' experiences. Study outcomes include: (A) feasibility and acceptability compared to a waitlist control (B) stress, using the Perceived Stress Scale (PSS); (C) anxiety, and depression, using the Generalized Anxiety Disorder-7 (GAD-7) and Patient Health Questionnaire-9 (PHQ-9); (D) insomnia, quality of life and mindfulness skills, using the Athens Insomnia Scale (AIS), Quality of Life Questionnaire (EQ-5D-5L) and Five Facets Mindfulness Questionnaire Short Forms (FFMQ-SF), respectively. We will also measure immersive tendencies, sickness and sense of presence using the Simulator Sickness Questionnaire (SSQ) and the Presence Questionnaire (PQ). Virtual reality-guided meditation could be an acceptable, feasible, safe, and cost-effective novel alternative health intervention for improving older adults' mental health.Clinical trial registration: NCT05315609 at https://clinicaltrials.gov.

Creating Patient Context: Empathy and Attitudes Toward Diabetes Following Virtual Immersion.

Pandemic circumstances created challenges for doctor of physical therapy (DPT) students to understand social determinants of health (SDH) in clinical rotations. Instead of canceling clinical rotations, a virtual reality cinema (cine-VR) education series was implemented. The purpose of this project is to describe the effect of this simulated immersion on student empathy and attitudes toward diabetes. The DPT students (n=59) participated in 12 cine-VR education modules, completing surveys at three time points as part of coursework. The students completed baseline measures of the Diabetes Attitude Scale-Version 3 (DAS-3) and Jefferson Empathy Scale (JES), and then were immersed in 12 cine-VR modules. One week after module completion, students participated in a class discussion about the modules. The students repeated the JES and DAS-3 scales at postclass and six weeks later. Three subscales from the Presence Questionnaire (PQ) were used to measure the virtual experience. Student scores on three DAS-3 subscales significantly improved on posttest: Attitude toward patient autonomy, Mean: 0.75, SD: 0.45; t(58) = 12.742, P < .001; Psychosocial impact of diabetes, Mean: -0.21, SD: 0.41; t(58) = -3.854, P < .001; and Seriousness of type 2 diabetes, Mean: -039, SD: 0.44; t(58) = -6.780, P < .001, with lower scores six weeks later. Student scores increased on the JES and remained high (P < .001). High subscale scores on the PQ demonstrated immersion and involvement in the virtual experience. These modules can allow for a shared student experience that improves diabetes attitudes, increases empathy, and fosters meaningful classroom discussion. The cine-VR experience is flexible, and modules allow students to engage in aspects of a patient's life that were not available otherwise.

Development and tolerability of a novel virtual- and proprioception-based car crash simulator as a new research tool in motor vehicle trauma research

Purpose: Investigations of causal theories of neck pain (NP) following motor vehicle crashes (MVC) has been difficult, as simulation is limited. Thus, we sought to evaluate tolerability to a novel virtual reality (VR)-based road collision simulator and screen for adverse reactions.Materials and Methods: Cross-sectional study. 25 healthy participants were exposed to a novel VR-based rear-end MVC with a small perturbation (0.2 g). The Simulator Sickness Questionnaire (SSQ) and Presence Questionnaire (PQ) were measured post-exposure and adverse reactions were recorded.Results: The system was well tolerated with no adverse reactions, however one participant reported NP the following day not lasting longer than 48 h. Participants reported low levels of simulator sickness (mean SSQ = 23.49 ± 21.98, range = 0.00 to 89.76; max score = 235.62), while presence (mean PQ = 91.04 ± 14.08, range = 54.00 to 112.00; max score = 133), was lower than literature recommendations.Conclusion: A VR-based road collision simulator can be safely used to explore the phenomenon of a motor vehicle crashes under controlled circumstances. Future work is needed to optimize the virtual reality environment and to investigate the effects of crash parameters.

Immersive Visualization of Python Coding Using Virtual Reality

The main goal of this study is to develop a mobile Virtual Reality (VR) application to conduct basic Python coding skills for university students who are struggling to learn to code. This study employs a quasi-experimental method to examine the difference in the efficiency of VR and traditional learning methods by evaluating the students' performance. Thirty students between 18 to 22 years old participated. The participants were divided into two control groups, in which one group used the conventional python learning method while another implemented the VR application in python learning. Unity 3D was used as the application development tool with Mobile Application Development Lifecycle (MADLC). The developed VR application was employed using Google cardboard to create an immersive VR experience. Usability tests, hypothesis tests, Presence Questionnaires (PQ) and system usability scale (SUS) are used as evaluation tools. Findings illustrated how learning through VR has yielded better performance than the conventional learning method. In hypothesis testing, the VR learning method suggested more effective learning with t_statistic value of 4.992, a more considerable value than t_critical=2.76. 73% of the participants rated above 68 out of 100, which indicated high levels of satisfaction with the use of the mobile VR application to learn Python. In short, the VR method is perceived to be useful and convenient to help students learn at any place and time.

Immersive Virtual Reality during Robot-Assisted Gait Training: Validation of a New Device in Stroke Rehabilitation.

Background and objective: Duration of rehabilitation and active participation are crucial for gait rehabilitation in the early stage after stroke onset. Virtual reality (VR) is an innovative tool providing engaging and playful environments that could promote intrinsic motivation and higher active participation for non-ambulatory stroke patients when combined with robot-assisted gait training (RAGT). We have developed a new, fully immersive VR application for RAGT, which can be used with a head-mounted display and wearable sensors providing real-time gait motion in the virtual environment. The aim of this study was to validate the use of this new device and assess the onset of cybersickness in healthy participants before testing the device in stroke patients. Materials and Methods: Thirty-seven healthy participants were included and performed two sessions of RAGT using a fully immersive VR device. They physically walked with the Gait Trainer for 20 min in a virtual forest environment. The occurrence of cybersickness, sense of presence, and usability of the device were assessed with three questionnaires: the Simulator Sickness Questionnaire (SSQ), the Presence Questionnaire (PQ), and the System Usability Scale (SUS). Results: All of the participants completed both sessions. Most of the participants (78.4%) had no significant adverse effects (SSQ < 5). The sense of presence in the virtual environment was particularly high (106.42 ± 9.46). Participants reported good usability of the device (86.08 ± 7.54). Conclusions: This study demonstrated the usability of our fully immersive VR device for gait rehabilitation and did not lead to cybersickness. Future studies should evaluate the same parameters and the effectiveness of this device with non-ambulatory stroke patients.

Study protocol-Evoked craving in high-dose benzodiazepine users.

Benzodiazepine (BDZ) abuse, especially concerning high doses of BDZs, is an impairing substance use disorder (SUD) that is often difficult to treat. Craving and cue reactivity (CR) are two important phenomena that have a prominent role in maintaining addiction and triggering relapses in BDZ abuse; nevertheless, they have rarely been addressed in scientific literature. The present study aims to fill these gaps by implementing a highly innovative virtual reality (VR) design to assess the impact of substance-related environmental cues on BDZ craving, as well as their influence on patients’ affective states. Therefore, on one hand, this research will contribute to the assessment of VR feasibility in the study of these phenomena, and, on the other, it will help disentangle the role that CR and craving have on mood and attention, which are equally important factors to consider when treating SUDs. We will recruit a healthy control group and a patient group comprising people seeking treatment for BDZ detoxification. The experimental design will consist of the presentation of three VR scenarios, one neutral, one BDZ-related but without BDZ cues, and another with BDZ cues. The craving will be measured through a virtual analog scale (VAS); the Profile of Mood States (POMS) and Alcohol Attention Scale (AAS) questionnaires in a modified version will also be administered. We will additionally control for VR-induced feelings of sickness by administering the Simulator Sickness Questionnaire (SSQ), and the Presence Questionnaire (PQ) will be used to investigate participants’ sense of presence in virtual environments. We expect patients to exhibit higher levels of craving, and that the craving will be higher after exposure to a cue-related virtual environment as compared to a neutral scenario.

The effects of touchless interaction on usability and sense of presence in a virtual environment

For software applications with a significant level of user involvement, the traditional concept of usability has evolved into the more complex idea of user experience, which also covers emotional, cognitive or physical responses. In virtual reality, user experience also depends on the user perception related to some peculiarities of immersive environments, where also the devices employed for user interaction play a determinant role. This has led to the design of the Presence Questionnaire (PQ) for the evaluation of the effectiveness of virtual environments. This work analyzes the effects of two different interaction modalities on usability and sense of presence: in particular, the Myo armband, a gesture-based device for touchless interaction, is compared with the Vive handheld controller bundled with the HTC Vive headset. A total of 84 subjects were recruited to test the virtual environment and asked them to fill in a questionnaire obtained by combining the Usability Metric for User eXperience (UMUX) questionnaire, the System Usability Scale (SUS) and the presence questionnaire (PQ), which was specifically designed for virtual environments. A comparison between the scores obtained for the two interaction modalities revealed which questionnaire items are significantly influenced by the input interface and deduce some insights about the consequences on human factors.

An Assessment of Individuals’ Systems Thinking Skills via Immersive Virtual Reality Complex System Scenarios

This study utilized the application of authentic Virtual Reality (VR) to replicate the real-world complex system scenarios of a large retail supply chain. The proposed VR scenarios were developed based on an established systems thinking instrument that consists of seven dimensions: level of complexity, independence, interaction, change, uncertainty, systems’ worldview, and flexibility. However, in this study, we only developed the VR scenarios for the first dimension, level of complexity, to assess an individual’s Systems Thinking Skills (STS) when he or she engages in a turbulent virtual environment. The main objective of this study was to compare a student’s STS when using traditional ST instruments versus VR scenarios for the complexity dimension. The secondary aim was to investigate the efficacy of VR scenarios utilizing three measurements: Simulation Sickness Questionnaire (SSQ), System Usability Scale (SUS), and Presence Questionnaire (PQ). In addition to the three measures, NASA TLX assessment was also performed to assess the perceived workload with regards to performing the tasks in VR scenarios. The results show students’ preferences in the VR scenarios are not significantly different from their responses obtained using the traditional systems skills instrument. The efficacy measures confirmed that the developed VR scenarios are user friendly and lie in an acceptable region for users. Finally, the overall NASA TLX score suggests that users require 36% perceived work effort to perform the activities in VR scenarios.

An immersive performative architectural design tool with daylighting simulations: a building information modeling-based approach

PurposeIn performative architectural design, daylighting is a crucial design consideration; however, the evaluation of daylighting in the design process can be challenging. Immersive environments (IEs) can create a dynamic, multi-sensory, first-person view in computer-generated environments, and can improve designers' visual perception and awareness during performative design processes. This research addresses the need for interactive and integrated design tools for IEs toward better-performing architectural solutions in terms of daylighting illumination. In this context, building information modeling and performance simulations are identified as critical technologies to be integrated into performative architectural design.Design/methodology/approachThis research adopts a design science research (DSR) methodology involving an iterative process of development, validation and improvement of a novel and immersive tool, HoloArch, that supports design development during daylighting-informed design processes. HoloArch was implemented in a game engine during a spiral software development process. HoloArch allows users to interact with, visualize, modify and explore architectural models. The evaluation is performed in two workshops and a user study. A hybrid approach that combines qualitative and quantitative data collection was adopted for evaluation. Qualitative data analyses involve interviews, while quantitative data analyses involve both daylighting simulations and questionnaires (e.g. technology acceptance model (TAM), presence and system usability scale (SUS)).FindingsAccording to the questionnaire results, HoloArch had 92/100 for SUS, a mean value of 120.4 for presence questionnaire (PQ) and 9.4/10 for TAM. According to the simulation results, all participants improved the given building's daylighting performance using HoloArch. The interviews also indicated that HoloArch is an effective design tool in terms of augmented perception, continuous design processes, performative daylighting design and model interaction. However, challenges still remain regarding the complete integration of tools and simultaneous simulation visualization. The study concludes that IEs hold promising potentials where performative design actions at conceptual, spatial and architectural domains can take place interactively and simultaneously with immediate feedback.Originality/valueThe research integrates building information modeling (BIM), performative daylighting simulations and IEs in an interactive environment for the identification of potentials and limitations in performative architectural design. Different from existing immersive tools for architecture, HoloArch offers a continuous bidirectional workflow between BIM tools and IEs.

Impact of Virtual Reality-Generated Construction Environments at Different Heights on Postural Stability and Fall Risk.

Falls due to postural instability are common in construction environments especially from a height. The purpose of the study was to investigate the impact of virtual reality (VR)-generated environments at different virtual heights on postural stability. Nineteen adults were analyzed for postural stability, tested in real (No VR) environment and in three VR environments, randomly assigned, at virtual heights of 0 ft. (VR0), 40 ft. (VR40), and 120 ft. (VR120). Postural stability was quantified using center of pressure postural sway variables and analyzed using a repeated measures analysis of variance (ANOVA). Participants also completed a simulation sickness questionnaire (SSQ) before and after VR exposure and a presence questionnaire (PQ) after VR exposure. Significant postural instability (p < .05) was identified between VR and No VR, in which increased postural instability was evident in all VR conditions compared with No VR. Scores from SSQ were within a pre-post score difference of five and the PQ score was (104.21 ± 14.03). Findings suggest that VR environments, regardless of virtual height, induced increased postural instability, which can be attributed to visual sensory conflicts to the postural control system created by VR exposure. Participants' subjective responses on SSQ and PQ confirmed the feasibility of using VR to represent realistic immersions in virtual heights. However, objectively, VR could potentially lead to postural instability, stressing caution. VR can be a potential tool for providing virtual high-altitude environment exposure for fall prevention training, however, more research is needed on postural adaptation with acute and chronic exposure to VR.

Single-channel EEG measurement of engagement in virtual rehabilitation: a validation study

Stroke rehabilitation suffers from low levels of patient engagement, impeding recovery. Virtual rehabilitation (VR) approaches can improve patient outcomes; however, there is limited understanding of the participant’s user experience and the field lacks a validated, objective measure of VR engagement. A neurophysiological measure of engagement in healthy adults was therefore examined, to inform future clinical studies. Twenty-four participants (Mage 26.7 years, range 18–47) interacted with a tabletop VR system (Elements DNA, or EDNA), after which they rated their experience on the presence questionnaire (PQ). Separately, participants completed tasks eliciting low (resting eyes-open and -closed) and high (EDNA VR and roller coaster simulation) levels of engagement while continuous electroencephalogram (EEG) was recorded from a single, left pre-frontal electrode. EEG differences between the resting and simulation conditions included an increase in theta power (p < 0.01) and a decrease in alpha power (p < 0.01). Importantly, theta power in simulation conditions correlated with PQ scores expressing the hands-on EDNA VR experience (rs = 0.38–0.48). In conclusion, the current results provide proof of concept that increased frontal theta power in healthy adults provides a valid measure of user engagement in VR simulation and participation. As the practical potential of VR is increasingly realised in stroke rehabilitation, objective EEG-based measures of engagement may provide a convenient and sensitive technique to assist in evaluating these interventions.

Assessing presence in virtual environments: adaptation of the psychometric properties of the Presence Questionnaire to the Portuguese populations

ABSTRACT Virtual Reality applications have the goal of transporting their users to a given virtual environment (VE). Thus, Presence is a consensual metric for evaluating the VEs' effectiveness. The present study adapts the Presence Questionnaire (PQ) for the Portuguese-speaking population, maintaining the validity of the contents and concepts, to ascertain the psychometric properties of the instrument.The adaptation to Portuguese was achieved through the standard adaptation process of translation and back-translation process. The sample consisted of 451 individuals (268 males and 183 females). Factor reliability ranged from 0.63 to 0.86. Confirmatory factor analysis produced a theoretical model of 21 items distributed among seven factors, where the covariance between some residual item errors was established. The fit indices obtained were , GFI , CFI , RMSEA , P [RMSEA ], MECVI . Results obtained allowed us to consider that the adapted Portuguese version of the PQ, with 21 items, forms a robust and valid questionnaire whose use is recommended to evaluate Presence in virtual reality research programmes, provided that they use samples of the Portuguese language (Europe).

Virtual reality in training: an experimental study with firefighters

Training with Virtual Reality (VR) can bring several benefits, such as the reduction of costs and risks. We present an experimental study that aims to evaluate the effectiveness of a Virtual Environment (VE) to train firefighters using an innovative approach based on a Real Environment (RE) exercise. To measure the VE’s effectiveness we used a Presence Questionnaire (PQ) and participant’s cybersickness, stress and fatigue. Results from the PQ showed that participants rated the VE with high spatial presence and moderate realness and immersion. Signs of stress, analyzed from participant’s Heart-Rate Variability, were shown in the RE but not in the VE. In the remaining variables, there was only an indicative difference for fatigue in the RE. Therefore, the results suggest that although our training VE was successful in giving participants spatial presence and in not causing cybersickness, its realness and immersion provided were not enough to provoke a similar RE response.

A 3D virtual environment for training soccer referees

Emerging digital technologies are being used in many ways by and in particular virtual environments provide new opportunities to gain experience on real-world phenomena without having to live the actual real-world experiences. In this study, a quantitative research approach supported by expert validation interviews was conducted to determine the availability of virtual environments in the training of soccer referees. The aim is to design a virtual environment for training purposes, representing a real-life soccer stadium to allow the referees to manage matches in an atmosphere similar to the real stadium atmosphere. At this point, the referees have a chance to reduce the number of errors that they make in real life by experiencing difficult decisions that they encounter during the actual match via using the virtual stadium. In addition, the decisions and reactions of the referees during the virtual match were observed with the number of different fans in the virtual stadium to understand whether the virtual stadium created a real stadium atmosphere for the referees. For this evaluation, Presence Questionnaire (PQ) and Immersive Tendencies Questionnaire (ITQ) were applied to the referees to measure their involvement levels. In addition, a semi-structure interview technique was utilized in order to understand participants’ opinions about the system. These interviews show that the referees have a positive attitude towards the system since they can experience the events occurred in the match as a first person instead of watching them from camera as a third person. The findings of current study suggest that virtual environments can be used as a training tool to increase the experience levels of the soccer referees since they have an opportunity to decide about the positions without facing the real-world risks.

Terapia de Exposição com Realidade Virtual para Transtorno de Estresse Pós-Traumático para bancários: um estudo de caso com o banco virtual

Exposure Therapy (ET) is an established treatment for Posttraumatic Stress Disorder (PTSD), in which patients gradually confront trauma memories through mental imagery. Virtual Reality Exposure (VRE) is an alternative for those who have difficulties in recreating such memories. Most studies develop VRE scenarios of war or accidents; however, traumatic events in Brazil are mainly of urban violence. Objective: To evaluate the quality of the Virtual Bank scenario through a pilot case study of a banker with PTSD through a cognitive behavioral therapy protocol. Method: A 39-year-old bank employee diagnosed with PTSD through the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID) took part on a Cognitive Behavioral Therapy (CBT) protocol including VRE. Patient’s symptoms were assessed through Beck’s anxiety and depression inventories, the Screen for Posttraumatic Stress Symptoms and Posttraumatic Cognitions Inventory. The therapy protocol was comprised of 16 sessions divided into three blocks: (i) psychoeducation; (ii) exposure and (iii) cognitive restructuring and relapse prevention. Reassessments were conducted at the end of each block. The sense of presence in the Virtual Bank was assessed through the Presence Questionnaire (PQ). Results: The patient presented at least 60% of reduction on all instruments and no longer met criteria for PTSD at posttreatment. The greatest reduction on PTSD symptoms scores occurred after the VRE block (-44.8%). The mean score of the PQ was 5.24. Conclusion: CBT protocol with VRE was effective in reducing all measures in this case study. Quality evaluation of the Virtual Bank was positive. Results are promising and similar to those of other innovative case studies using VRE for PTSD. Keywords: Posttraumatic Stress Disorder, Cognitive Behavioral Therapy, Virtual Reality, Trauma, Exposure Therapy.

Back to Reality: The Use of the Presence Questionnaire for Measurement of Fidelity in Simulation

Background and Purpose: Simulation fidelity includes three aspects: physical, conceptual, and psychological. This study reports on strengths and limitations of the Presence Questionnaire (PQ) for measurement of fidelity in human patient simulation. Methods: This nonexperimental correlational study includes a convenience sample of 83 undergraduate nursing students who participated in an emergency simulation and completed the PQ. Analysis of variance (ANOVA) on the 7-item PQ Realism subscale between groups who did or did not experience simulation equipment malfunction measured the PQ's sensitivity to this challenge to fidelity. Results: Students (n = 23) experiencing simulation equipment malfunction scored significantly lower on the PQ Realism subscale than students (n = 58) not experiencing equipment malfunction. Conclusions: The modified PQ Realism subscale is a valid measure of physical fidelity in nursing simulation and may advance the study and development of simulation for researchers and nursing educators.

A questionnaire for measuring presence in virtual environments: factor analysis of the presence questionnaire and adaptation into Brazilian Portuguese

The increasing use of virtual reality (VR) environments in different domains of research and psychotherapy offers advantages over traditional treatment approaches. However, in order to feel immersed and involved by the VR experience, participants require VR scenarios that promote the subjective feeling of “being there,” i.e., presence. The most utilized mean of operationalization of presence is through self-report scales and questionnaires. This article aims to report the translation and adaptation of the presence questionnaire (PQ) into Brazilian Portuguese, comparing the factorial distribution of the adapted version with the original PQ. Translation and back-translations were conducted by a team of Brazilian psychologists and computer science professionals with experience on the field. Participants (n = 100) answered the Brazilian version of the questionnaire after wearing a head-mounted display (HMD) and driving a virtual automobile in a VR scenario. The principal component analysis of the translated version generated factors consistently with the original study; however, items that had equivocal construct adequacy in the original PQ changed factors. The factor structure of the PQ is discussed. The growing use of VR environments requires instruments assessing the presence of immersed individuals, and the Brazilian Portuguese version of the PQ appears to be a viable option.