The Arizona Sexual Experience Scale (ASEX) is a brief self- or clinician-rated screen for sexual dysfunction, covering the core domains of sexual response: drive, arousal, genital response, reaching orgasm, and satisfaction from orgasm.
It was developed by McGahuey, Gelenberg, and colleagues at the University of Arizona to make sexual dysfunction easy to detect in psychiatric and medical patients, particularly the sexual side effects of antidepressants.
Higher totals indicate greater dysfunction, and the instrument shows strong internal consistency, test-retest stability, and good diagnostic accuracy in the original validation, with measurement invariance confirmed across many countries, languages, genders, and sexual orientations.
It is a screen, not a diagnosis: it identifies the presence and severity of dysfunction but not its cause, it does not assess distress, and it is copyrighted, so permission is required before use.
At a Glance
Items
5 (sex drive, arousal, penile erection/vaginal lubrication, ability to reach orgasm, satisfaction from orgasm; Item 3 has separate male and female wording)
Administration time
A few minutes (under 5 minutes)
Response format
6-point Likert per item, 1 = highest function (hyperfunction) to 6 = absent function (hypofunction), with item-specific anchors
Scores
Single total score (sum of the 5 items, range 5-30); unidimensional; higher scores indicate greater sexual dysfunction
Validated populations
Adults (18+); psychiatric, medical, and general samples; cross-culturally across 42 countries and 26 languages
McGahuey et al. (2000), Journal of Sex & Marital Therapy
Introduction
The Arizona Sexual Experience Scale (ASEX) is a 5-item rating scale that quantifies sexual function across five core domains: sex drive, arousal, penile erection or vaginal lubrication, ability to reach orgasm, and satisfaction from orgasm. Developed by McGahuey, Gelenberg, and colleagues (2000) at the University of Arizona, the instrument was designed to address a practical gap in clinical care: the shortage of brief, validated tools for detecting sexual dysfunction in psychiatric and medical patients.
Sexual difficulties are common, with approximately 40% of women and 30% of men describing sexual dysfunction, yet recognition in medical settings remains limited because these concerns are difficult to report and to elicit (Elnazer & Baldwin, 2020). The ASEX was built to lower those barriers through brevity, plain wording, and a non-intrusive question format.
Understanding the Construct
The ASEX treats sexual function as a small set of core elements that, when impaired, constitute dysfunction, rather than as an exhaustive catalogue of sexual behaviour. Questions about the frequency or preference of sexual activity were deliberately excluded, because the developers judged them unrelated to sexual dysfunction as such (McGahuey et al., 2000). The five domains are intended to apply regardless of a respondent’s sexual orientation or whether a partner is currently available.
Detection matters clinically because sexual side effects are a leading reason patients stop medication, and treatment-emergent sexual dysfunction is especially common with antidepressants, where reported rates span a wide range (8% to 73%) across studies (McGahuey et al., 2000). Because patients rarely raise these concerns spontaneously and clinicians do not always ask, a brief standardized screen helps close a persistent detection gap.
Theoretical Foundation
The ASEX rests on a functional model of sexual response in which five elements are treated as necessary components of satisfactory sexual function. Each is captured by a single item and rated on a common 6-point scale, so that both the presence and the severity of impairment can be read off quickly (McGahuey et al., 2000).
Sex drive: the strength of sexual interest and desire, asked as “How strong is your sex drive?”, anchored from “Extremely strong” to “Absent.”
Arousal: the ease of becoming sexually excited, asked as “How easily are you sexually aroused (turned on)?”, anchored from “Extremely easily” to “Never.”
Erection / lubrication: the genital response, with gender-specific wording (“Can you easily get and keep an erection?” or “How easily does your vagina become moist or wet during sex?”).
Orgasm ability: the ease of reaching orgasm, asked as “How easily can you reach an orgasm (climax)?”, anchored from “Extremely easily” to “Never reach orgasm.”
Orgasm satisfaction: the subjective satisfaction derived from orgasm, asked as “How satisfying is your orgasm (climax)?”, anchored from “Extremely satisfying” to “Never achieve orgasm.”
The scale is bimodal in interpretation: high scores reflect hypofunction, but uniformly very low scores can also mark dysfunction such as premature ejaculation or spontaneous orgasm (McGahuey et al., 2000). The ASEX identifies the presence and severity of sexual dysfunction; it does not establish its cause.
📏 Key insight: The ASEX’s contribution is pragmatic. By reducing sexual function to five core domains rated in under five minutes, it makes routine screening feasible in settings where sexual dysfunction otherwise goes unrecorded.
Key Features
Assessment Characteristics
5 items covering the core domains of sexual function
A few minutes to complete (under 5 minutes)
6-point Likert scale per item, with anchors specific to each item’s content
Gender-specific wording on Item 3 (penile erection or vaginal lubrication); the other four items are shared
Self- or clinician-administered, for adults
Translated into 26 languages in a large cross-cultural validation (Ballester-Arnal et al., 2024)
Dimensions Assessed
Sex drive – strength of sexual interest and desire
Arousal – ease of becoming sexually excited
Erection / lubrication – the genital physiological response
Orgasm ability – ease of reaching orgasm
Orgasm satisfaction – subjective satisfaction from orgasm
The five items load on a single underlying factor; the ASEX yields one total score rather than domain subscales (Ballester-Arnal et al., 2024).
Versions & Adaptations
Original 5-item ASEX (McGahuey et al., 2000), administered in male and female wordings that differ only on Item 3
Translations: the instrument has been rendered in 26 languages and validated across 42 countries (Ballester-Arnal et al., 2024)
No distinct short form or revised structural version of the ASEX was identified during verification
Research Applications
Treatment-emergent sexual dysfunction – detecting and monitoring sexual side effects, particularly of antidepressants (Elnazer & Baldwin, 2020)
Baseline assessment before initiating medications known to affect sexual function
Clinical trials – as a primary or secondary outcome for sexual side-effect profiles
Prevalence and cross-cultural research – estimating sexual dysfunction across clinical populations and countries
Brief assessment of sexual function across five core domains.
Scoring and Interpretation
Response Format
Each item is rated on a 6-point scale with anchors specific to that item, running from the highest level of function (scored 1) to absent function (scored 6). Respondents are instructed to rate their overall level during the past week, including today (McGahuey et al., 2000).
Illustrative Items
The full ASEX is copyrighted by the Arizona Board of Regents and is not reproduced in full here. Two items illustrate the response structure; the remaining items follow the same 6-point logic with domain-specific wording.
Item 1 – Sex Drive:“How strong is your sex drive?”
Extremely strong
Very strong
Somewhat strong
Somewhat weak
Very weak
Absent
Item 4 – Ability to Reach Orgasm:“How easily can you reach an orgasm (climax)?”
Extremely easily
Very easily
Somewhat easily
Somewhat difficult
Very difficult
Never reach orgasm
Item 3 is worded separately for men (“Can you easily get and keep an erection?”) and women (“How easily does your vagina become moist or wet during sex?”), each anchored from “Extremely easily” to “Never or almost never.”
Scoring Procedure
Sum the 5 item scores for a total ranging from 5 to 30 (not 0 to 30).
Read individual items alongside the total, since a single elevated item can indicate domain-specific dysfunction.
Dysfunction Criteria
Sexual dysfunction is indicated by any one of the following (McGahuey et al., 2000):
A total score of 19 or higher
Any single item of 5 or higher
Any three items of 4 or higher
No published severity bands (such as mild, moderate, or severe total-score ranges) exist for the ASEX. Interpret scores using the dysfunction criteria above, or relative to your own sample; do not impose graded severity categories that the instrument’s development did not define.
Population Norms
In the original validation, mean total ASEX scores separated psychiatric patients from healthy controls, and within each group women scored higher (more dysfunction) than men. These are patient-versus-control means, not groups defined by sexual-dysfunction status (McGahuey et al., 2000, as reported in Elnazer & Baldwin, 2020).
Sample
N
M
SD
Source
Psychiatric patients, women
—
20.3
4.8
McGahuey et al. (2000), as reported in Elnazer & Baldwin (2020)
Psychiatric patients, men
—
17.2
5.4
McGahuey et al. (2000), as reported in Elnazer & Baldwin (2020)
Healthy controls, women
—
13.5
3.9
McGahuey et al. (2000), as reported in Elnazer & Baldwin (2020)
Healthy controls, men
—
10.9
2.6
McGahuey et al. (2000), as reported in Elnazer & Baldwin (2020)
Gender-specific subgroup sizes were not reported separately; the validation sample comprised psychiatric patients and healthy controls. These are descriptive means, not normative cut points.
Item-Level and Special Considerations
Single-item dysfunction: a single item scoring 5 or higher is itself one of the criteria for dysfunction in that domain (McGahuey et al., 2000).
Very low scores: uniformly low scores (for example, all items scored 1) may reflect hyperfunction such as premature ejaculation or spontaneous orgasm, which can also constitute dysfunction (McGahuey et al., 2000).
Etiology: the ASEX measures presence and severity but not cause; a positive screen warrants further evaluation to distinguish medication, illness, psychological, and relationship factors (McGahuey et al., 2000).
Research Evidence and Psychometric Properties
Reliability Evidence
Internal consistency: Cronbach’s α = 0.91 in the original validation (McGahuey et al., 2000).
Test-retest reliability: assessed in the original development and strong, with r = .801 (p < .01) in patients and r = .892 (p < .01) in controls (McGahuey et al., 2000, as reported in Elnazer & Baldwin, 2020).
Cross-cultural reliability: ordinal Cronbach’s α = 0.79 and McDonald’s omega = 0.85 in the 42-country validation (Ballester-Arnal et al., 2024).
Clinical populations: good internal consistency reported across psychiatric, medical, and primary sexual dysfunction samples (Elnazer & Baldwin, 2020).
Validity Evidence
Factor structure: confirmatory factor analysis supports a single-factor structure with good fit (CFI = 0.966, TLI = 0.933, RMSEA = 0.089); standardized loadings range from 0.55 to 0.80 (Ballester-Arnal et al., 2024).
Convergent validity: significant correlations with related factors and items of the Brief Index of Sexual Functioning (McGahuey et al., 2000).
Concurrent agreement: high agreement between ASEX self-ratings and a gold-standard clinician rating (McGahuey et al., 2000).
Discriminant validity: low correlations with depression measures (BDI, HDRS), distinguishing sexual dysfunction from depression severity as such (McGahuey et al., 2000).
Criterion validity: total scores differed significantly between psychiatric patients and healthy controls, with appropriate gender differences (McGahuey et al., 2000).
Measurement invariance: established across 42 countries, 26 languages, genders, and sexual orientations (Ballester-Arnal et al., 2024).
Diagnostic Accuracy
Original ROC analysis: the ASEX area under the curve was 0.929 ± 0.029, exceeding the Brief Index of Sexual Functioning comparison scale (AUC 0.786 ± 0.050), a significant difference (McGahuey et al., 2000, as reported in Elnazer & Baldwin, 2020).
Original diagnostic performance: against the clinician gold-standard rating, sensitivity was 82%, specificity 90%, positive predictive value 88%, and negative predictive value 85% (McGahuey et al., 2000, as reported in Elnazer & Baldwin, 2020).
Schizophrenia / schizoaffective disorder: in outpatients (n = 137), an optimal ASEX total cutoff of 14/15 yielded sensitivity 80.8%, specificity 88.1%, and AUC 0.93 against the Dickson-Glazer Scale (Nunes et al., 2009, as reported in Elnazer & Baldwin, 2020).
Internal consistency in schizophrenia: in a separate schizophrenia/schizoaffective sample (n = 247), Cronbach’s α = 0.90, using the McGahuey dysfunction criteria (total ≥19, any item ≥5, or any three items ≥4) as the reference (Byerly et al., 2006).
Single-Item Screening Compared with the ASEX
A specific one-item question about sexual dysfunction showed satisfactory agreement with the ASEX: sensitivity 85%, specificity 63.7%, positive predictive value 83%, negative predictive value 67.1% (Byerly et al., 2006).
A general side-effect question performed poorly: sensitivity 11.3%, specificity 92.5%, positive predictive value 76%, negative predictive value 33% (Byerly et al., 2006).
Population and Cross-Cultural Studies
Chronic hepatitis C: 35% overall prevalence of ASEX-defined sexual dysfunction, higher in women (50%), in a sample of 46 patients (Soykan et al., 2005, as reviewed in Elnazer & Baldwin, 2020).
Cross-cultural sample: 82,243 participants from 42 countries (57% women, 40% men, 3% gender-diverse), with total scores approximately normally distributed and four of the six highest-scoring countries in Asia (Ballester-Arnal et al., 2024).
Gender and orientation: measurement invariance was established across cisgender men, cisgender women, and gender-diverse individuals, and across heterosexual, gay/lesbian, bisexual, and other orientations (Ballester-Arnal et al., 2024).
Sensitivity to Treatment Effects
The ASEX detects treatment-emergent sexual dysfunction with SSRIs and SNRIs and is used to compare the sexual side-effect profiles of different medications (Elnazer & Baldwin, 2020).
Usage Guidelines and Applications
Applications
Routine screening for sexual dysfunction in psychiatric, primary care, and specialty settings
Baseline and follow-up assessment around the start, change, or discontinuation of medications that affect sexual function
Treatment monitoring of the emergence or resolution of sexual side effects over time
Research use as an outcome in clinical trials, prevalence surveys, and cross-cultural studies (Elnazer & Baldwin, 2020; Ballester-Arnal et al., 2024)
Design Considerations
Use the published dysfunction criteria (total ≥19, any item ≥5, or any three items ≥4) rather than ad hoc severity bands, which the instrument does not define.
Administer the correct Item 3 wording for each respondent; the male and female versions differ only on this item.
Hold the recall window constant across administrations (past week including today) when tracking change.
Secure permission before use; the ASEX is copyrighted and not free to reproduce.
Cultural Considerations
Measurement invariance across countries, languages, genders, and orientations supports cross-group comparison, though the validation reached only partial invariance in places (Ballester-Arnal et al., 2024).
Total scores were highest in several Asian countries, which may reflect cultural or reporting differences rather than true differences in function (Ballester-Arnal et al., 2024).
Limitations
No etiology: the ASEX identifies dysfunction but does not determine its cause (McGahuey et al., 2000).
Function, not distress: the scale measures function; DSM-5 diagnoses additionally require distress, which the ASEX does not assess.
Bimodal scoring: very low scores can reflect hyperfunction, so the total is not a simple monotonic index of impairment (McGahuey et al., 2000).
Screen, not assessment: a positive result should prompt a fuller evaluation rather than stand alone.
Short recall window: the one-week timeframe may miss intermittent problems.
Copyright and Usage Responsibility: Check that you have the proper rights and permissions to use this assessment tool in your research. This may include purchasing appropriate licenses, obtaining permissions from authors/copyright holders, or ensuring your usage falls within fair use guidelines.
The Arizona Sexual Experience Scale (ASEX) is copyrighted by the Arizona Board of Regents, and all rights are reserved. Permission is required for use; contact the Arizona Board of Regents. Item content is reproduced here only in brief illustrative form.
Proper Attribution: When using or referencing this scale, cite the original development:
McGahuey, C. A., Gelenberg, A. J., Laukes, C. A., Moreno, F. A., Delgado, P. L., McKnight, K. M., & Manber, R. (2000). The Arizona Sexual Experience Scale (ASEX): Reliability and validity. Journal of Sex & Marital Therapy, 26(1), 25-40. https://doi.org/10.1080/009262300278623
McGahuey, C. A., Gelenberg, A. J., Laukes, C. A., Moreno, F. A., Delgado, P. L., McKnight, K. M., & Manber, R. (2000). The Arizona Sexual Experience Scale (ASEX): Reliability and validity. Journal of Sex & Marital Therapy, 26(1), 25-40. https://doi.org/10.1080/009262300278623
Comprehensive Review and Clinical Applications:
Elnazer, H. Y., & Baldwin, D. S. (2020). Structured review of the use of the Arizona Sexual Experiences Scale in clinical settings. Human Psychopharmacology: Clinical and Experimental, 35(3), e2730. https://doi.org/10.1002/hup.2730
Diagnostic Accuracy Studies:
Byerly, M. J., Nakonezny, P. A., Fisher, R., Magouirk, B., & Rush, A. J. (2006). An empirical evaluation of the Arizona Sexual Experience Scale and a simple one-item screening test for assessing antipsychotic-related sexual dysfunction in outpatients with schizophrenia and schizoaffective disorder. Schizophrenia Research, 81(2-3), 311-316. https://doi.org/10.1016/j.schres.2005.08.013
Large-Scale Cross-Cultural Validation:
Ballester-Arnal, R., Elipe-Miravet, M., Castro-Calvo, J., et al. (2024). Cross-cultural validation of the Arizona Sexual Experience Scale (ASEX) in 42 countries and 26 languages. Sexuality Research and Social Policy, 22(3), 1307-1329. https://doi.org/10.1007/s13178-024-01040-0
Note: Findings attributed above to Nunes et al. (2009) and Soykan et al. (2005) are cited as reported in the Elnazer and Baldwin (2020) structured review.
Related Assessments: Related sexual-function and quality-of-life measures will be linked here as their pages go live.
Frequently Asked Questions
What does the ASEX measure?
The ASEX measures sexual function across five core domains: sex drive, arousal, penile erection or vaginal lubrication, ability to reach orgasm, and satisfaction from orgasm. It captures both the presence and the severity of sexual dysfunction, with a single item for each domain.
How is the ASEX scored?
The five items are summed into one total score, where higher scores indicate greater sexual dysfunction. Sexual dysfunction is indicated by any one of three published criteria (McGahuey et al., 2000): a total score of 19 or higher, any single item of 5 or higher, or any three items of 4 or higher. No published severity bands (mild, moderate, severe) exist for the ASEX, so graded severity categories should not be imposed on the total score.
Is the ASEX free to use?
No. The ASEX is copyrighted by the Arizona Board of Regents, with all rights reserved. Researchers and clinicians must obtain permission from the Arizona Board of Regents before use, and should cite the original McGahuey et al. (2000) publication.
How reliable and accurate is the ASEX?
In the original validation, internal consistency (Cronbach's alpha) was 0.91 and test-retest reliability was strong in both patients and controls (McGahuey et al., 2000, as reported in Elnazer and Baldwin, 2020). Against a clinician gold-standard rating it reached sensitivity of 82% and specificity of 90%, with an area under the ROC curve of 0.929. A large cross-cultural validation later reported a single-factor structure with good fit and measurement invariance across countries, languages, genders, and sexual orientations (Ballester-Arnal et al., 2024).
Why do the male and female versions differ?
The ASEX differs only on Item 3, which asks men about the ease of getting and keeping an erection and women about the ease of vaginal lubrication. The remaining four items are shared. Administering the correct Item 3 wording for each respondent is important for valid scoring.
Can a very low ASEX score also indicate a problem?
Yes. The scale is bimodal in interpretation. High scores reflect reduced function, but uniformly very low scores can reflect hyperfunction, such as premature ejaculation or spontaneous orgasm, which the developers also regarded as a form of sexual dysfunction (McGahuey et al., 2000).
Does the ASEX explain why sexual dysfunction is present?
No. The ASEX identifies the presence and severity of sexual dysfunction but not its cause. A positive screen should prompt further evaluation to distinguish medication effects, illness, psychological factors, and relationship issues. It also measures function rather than distress, which is a separate requirement for a DSM-5 diagnosis.
