Partner Communication Scale

1. Abstract

The Partner Communication Scale (PCS) is an empirically validated psychometric instrument engineered to evaluate the frequency, breadth, and depth of interpersonal sexual communication between individuals and their sexual partners. Originally developed and standardized by Robin R. Milhausen, Jessica McDermott Sales, Ralph J. DiClemente, and colleagues under a grant funded by the National Institute of Mental Health (NIMH), the PCS was constructed to address a critical measurement gap in adolescent and young adult reproductive health and HIV/STI prevention research. While historically communication within sexual dyads was frequently quantified using rudimentary, single-item proxy variables or unstandardized behavioral checklists, the PCS operationalizes sexual communication across five theoretically and clinically fundamental domains: (a) pregnancy and contraception, (b) sexually transmitted diseases (STDs), (c) HIV/AIDS prevention and serostatus testing, (d) condom negotiation and pragmatic use, and (e) investigation of a partner’s sexual history.

The comprehensive instrument comprises 20 items evaluated on a 5-point Likert response scale ranging from 1 (Never) to 5 (Always), alongside an empirically distilled 5-item unidimensional brief version designed for rapid screening and longitudinal intervention trials. Across extensive multi-wave validation cohorts comprising sexually active adolescents and emerging adults, the PCS has evidenced robust psychometric qualities. Internal consistency estimates demonstrate exceptional reliability, yielding Cronbach’s alpha coefficients between α = .80 and α = .90 across diverse evaluation waves. Longitudinal stability analyses exhibit correlation coefficients reflective of real-world dyadic relationship evolution (r = .37 to .44 over 6- to 12-month assessment windows). Structural equation modeling and factor analytic investigations confirm both a distinct five-factor correlated structure corresponding to specific risk-reduction domains and a coherent higher-order general factor of dyadic sexual protective communication. The instrument exhibits pronounced convergent, concurrent, and predictive validity through significant correlations with sexual communication self-efficacy, parental sexual communication, consistent condom adherence at recent and cumulative sexual episodes, and decreased incidence of self-reported condom-use barriers.

2. Keywords

Partner Communication Scale, sexual communication, HIV prevention, STI risk reduction, condom negotiation, adolescent sexual health, dyadic communication, psychometrics, reproductive health, contraceptive behavior

3. Authors

The Partner Communication Scale was designed, validated, and published by a multidisciplinary team of behavioral scientists, public health epidemiologists, and sexologists:

• Robin R. Milhausen, Ph.D. – Department of Family Relations and Applied Nutrition, College of Social and Applied Human Sciences, University of Guelph, Guelph, Ontario, Canada; formerly affiliated with The Kinsey Institute for Research in Sex, Gender, and Reproduction, and the Rural Center for AIDS/STD Prevention, Indiana University, Bloomington, IN. (Corresponding Author: [email protected]).
• Jessica McDermott Sales, Ph.D. – Department of Behavioral, Social, and Health Education Sciences, Rollins School of Public Health, Emory University, Atlanta, GA.
• Ralph J. DiClemente, Ph.D. – Department of Social and Behavioral Sciences, School of Global Public Health, New York University, New York, NY; formerly Rollins School of Public Health and School of Medicine, Emory University, Atlanta, GA.
• Gina M. Wingood, Sc.D., M.P.H. – Department of Sociomedical Sciences, Mailman School of Public Health, Columbia University, New York, NY; formerly Emory University.
• Laura F. Salazar, Ph.D. – School of Public Health, Georgia State University, Atlanta, GA.
• Richard A. Crosby, Ph.D. – College of Public Health, University of Kentucky, Lexington, KY.

4. Purpose

Interpersonal communication within intimate relationships represents one of the most proximal behavioral determinants of sexual health outcomes, including the transmission of human immunodeficiency virus (HIV), the acquisition of sexually transmitted infections (STIs), and unintended pregnancy. Despite extensive public health consensus regarding the protective value of communication, historically researchers encountered significant methodological hurdles due to the lack of psychometrically standardized, multi-item instruments capable of capturing the nuances of dyadic discourse. Historically, behavioral research frequently relied on ad hoc, single-item questions (e.g., “Did you talk to your partner about condoms? Yes/No”) that conflated distinct prevention domains, exhibited poor distributional properties, and masked the frequency and depth of communicative exchanges.

The primary purpose of the Partner Communication Scale (PCS) is to supply a psychometrically validated, multi-faceted, and sensitive measurement system capable of assessing how frequently an individual engages in explicit dialogue regarding critical sexual health realities with their sexual partner over a specified recall interval (typically the preceding 6 months). Originally formulated within an extensive intervention framework supported by the National Institute of Mental Health (NIMH), the scale was designed to overcome literacy barriers by maintaining an accessible reading demand (standardized at approximately a fourth-grade reading level), ensuring that vulnerable adolescent cohorts could accurately articulate their behavioral interactions without cognitive strain.

In clinical, public health, and research contexts, the PCS fulfills several distinct functions:

• Intervention Efficacy Assessment: Serves as a primary or secondary mediator variable in randomized controlled trials (RCTs) testing structural, educational, or behavioral sexual risk reduction programs, tracking pre-to-post-intervention trajectories in communication skills.
• Dyadic Risk Stratification: Enables health educators, clinicians, and school-based counselors to identify specific topics (e.g., discussions surrounding past partner history or testing) where individuals exhibit severe communication avoidance or anxiety.
• Epidemiological and Behavioral Research: Allows researchers to test complex theoretical models examining how psychological traits (such as self-esteem, self-efficacy, or attachment style) interact with dyadic communication to predict objective biological end points, such as laboratory-confirmed STI incidence or consistent barrier contraception usage.

5. Psychological Construct

The Partner Communication Scale operationalizes dyadic sexual health communication not as a static, unitary trait, but as an active, behavioral constellation of interpersonal discussions aimed at risk appraisal, boundary negotiation, and health protection. The construct encapsulates five distinct yet interrelated behavioral dimensions:

1. Pregnancy and Contraceptive Planning

This domain captures the extent to which an individual openly discusses prospective reproductive scenarios and prophylactic contraception with their partner. Rather than solely recording whether birth control was applied, this construct measures conversations about future contingencies (e.g., what steps would be taken in the event of an unexpected pregnancy), immediate reproductive desire (emotional readiness to have a child), and explicit planning regarding non-barrier contraceptive methods (e.g., hormonal implants, intrauterine devices, or oral contraceptives).

2. Sexually Transmitted Diseases (STDs)

This dimension assesses the frequency of informational and preventative exchanges explicitly addressing broad-spectrum STIs (e.g., chlamydia, gonorrhea, syphilis, HPV). The items measure discussions regarding biological manifestations (identifying visible signs and symptoms), historical exposure (disclosing whether either partner has had a prior infection), proactive screening behaviors (getting tested), and bilateral strategies for physical prevention.

3. HIV/AIDS Prevention and Testing

Given the severe epidemiological implications and social stigma traditionally surrounding HIV/AIDS, this domain functions as an independent construct separate from general STDs. It encompasses explicit discussions regarding viral transmission vectors, preventative behaviors, personal testing histories, and collaborative engagement in dyadic screening (undergoing HIV testing together). By separating HIV/AIDS from general STIs, the scale isolates the unique psychological thresholds often required to initiate conversations about a life-threatening, stigmatized chronic condition.

4. Condom Negotiation and Behavioral Logistics

This subscale evaluates the pragmatic and technical aspects of male or female condom utilization. Construct measurement extends beyond passive agreement into active negotiation: discussing routine adherence (using condoms during every sexual encounter), procurement logistics (purchasing or obtaining barrier methods), technical competence (how to properly apply and handle condoms), and sexual satisfaction strategies (enhancing pleasure and comfort during condom-protected intercourse). This dimension reflects behavioral skills and self-efficacy in overcoming partner-related barriers.

5. Partner’s Sexual History and Concurrency

Often considered the most socially sensitive and conflict-prone domain of sexual discourse, this construct captures an individual’s proactive inquiry into their partner’s past and current risk profiles. Items quantify communication regarding lifetime sexual partner volume, potential relationship concurrency (whether the partner currently has other concurrent partners), and high-risk network exposures (such as whether a partner has had previous sexual contact with individuals living with HIV or other STIs, or sexual encounters with male partners). Addressing this construct demands significant interpersonal assertiveness and reflects high transparency within the dyad.

6. Theoretical Framework

The construction and validation of the Partner Communication Scale are anchored in several foundational theories of human behavior, social cognition, and dyadic interaction.

Social Cognitive Theory (SCT)

Rooted in the work of Albert Bandura, SCT asserts that human behavior is governed by reciprocal determinism—the continuous interaction between personal cognitive factors, environmental influences, and behavioral patterns. Within this model, self-efficacy (an individual’s confidence in their ability to execute a specific course of action) serves as a critical prerequisite for behavioral execution. The PCS directly measures the behavioral manifestation of communication self-efficacy within interpersonal contexts. According to SCT, individuals must not only possess the knowledge of how to prevent disease, but they must also possess the behavioral skills to navigate complex social interactions, interpret verbal and non-verbal feedback, and negotiate safer sexual outcomes under conditions of interpersonal pressure.

Information-Motivation-Behavioral Skills (IMB) Model

Developed by Fisher, Fisher, and colleagues, the IMB Model is widely recognized as a gold-standard framework for understanding HIV and STI risk-related actions. The model posits that preventative behavior is a direct function of objective health information, individual and social motivation, and behavioral skills. Interpersonal communication sits at the heart of the Behavioral Skills component. While an individual may possess accurate knowledge regarding transmission and hold high motivation to avoid infection, the absence of practical, assertiveness-driven communicative competencies with a sexual partner undermines preventative success. The PCS provides a direct empirical measure of these behavioral skills enacted in real-world contexts.

Theory of Planned Behavior (TPB)

Formulated by Icek Ajzen, the TPB posits that behavioral intentions and actions are dictated by attitudes toward the behavior, subjective norms, and perceived behavioral control. Dyadic communication operationalized by the PCS reflects both perceived control and normative negotiation. By discussing testing, condoms, and history, partners establish explicit dyadic norms, reducing ambiguity and transforming ambiguous intentions into concrete, co-constructed behavioral compacts.

7. Validity

The psychometric validity of the Partner Communication Scale was established across multiple empirical phases involving extensive samples of sexually active participants, primarily adolescent females evaluated in community and clinical settings (Milhausen et al., 2007).

Content and Face Validity

Item generation commenced with a comprehensive synthesis of the empirical literature regarding adolescent risk reduction, followed by intensive focus groups conducted with target populations to verify that the language, relational contexts, and behavioral scenarios accurately mirrored contemporary adolescent sexual interactions. Preliminary items were reviewed by independent panels of health educators and psychometricians to ensure that the content encompassed critical preventative behaviors. Revisions were incorporated to ensure a fourth-grade reading level, thereby establishing robust face and content validity.

Convergent Validity

In validation studies (Study 1, N = 522; Study 2, N = 243; Study 3, N = 715), the PCS displayed moderate-to-strong positive correlations with theoretically aligned constructs:

• Parental Communication: PCS scores correlated positively with frequency of parent-adolescent sexual communication (measured via the Parent-Adolescent Communication Scale; Sales et al., 2008), supporting the proposition that communicative competence across familial contexts translates into romantic and sexual dyadic interactions.
• Sexual Communication Self-Efficacy: The PCS exhibited statistically significant moderate correlations with self-efficacy to negotiate safer sex with both steady boyfriends and new partners (Cohen’s d effect sizes in the moderate range; Cohen, 1988).
• Psychosocial Functioning: Statistically significant positive correlations were established with global self-esteem assessed via the Rosenberg Self-Esteem Scale and overall relationship satisfaction.

Predictive and Criterion Validity

The PCS demonstrated strong predictive utility regarding objective and self-reported behavioral outcomes. Scores were positively associated with:

• Consistent condom use during the most recent act of vaginal intercourse with both primary (steady) and casual (nonsteady) partners.
• Cumulative condom use frequency across the preceding 30 days and across a 6-month retrospective recall window.
• Sexual refusal self-efficacy and formal participation in school- or community-based sex education curricula.

Conversely, the scale correlated negatively with validated barriers to protection, displaying significant inverse associations with the Fear of Negative Consequences subscale and Partner-Related Barriers subscale of the Condom Barriers Scale (St. Lawrence et al., 1999).

Discriminant Validity

To verify that the PCS was not merely capturing general sociability, talkativeness, or media consumption habits, the instrument was correlated with unrelated lifestyle variables, such as daily hours spent watching television or viewing movies. These correlations were non-significant (r values approximating .00, p > .05), confirming high discriminant validity.

8. Reliability

The reliability of the Partner Communication Scale has been rigorously evaluated utilizing both internal consistency metrics and longitudinal test-retest evaluations across independent study cohorts.

Internal Consistency

Across validation investigations, the PCS has yielded exceptional internal consistency coefficients that consistently satisfy or exceed conventional psychometric benchmarks (α ≥ .80):

• Study 1 (N = 522): Baseline internal consistency reached Cronbach’s α = .80. At the 6-month longitudinal follow-up, the coefficient rose to α = .87, maintaining α = .87 at the 12-month evaluation point.
• Study 2 (N = 243): Cronbach’s alpha for the overall communication scale was documented at α = .90.
• Study 3: At baseline (N = 715), the scale demonstrated α = .84; at the 6-month follow-up assessment (N = 313), internal consistency was estimated at α = .89.

Temporal Stability (Test-Retest Reliability)

Measurement stability was evaluated across substantial time intervals (6 months and 12 months) designed to mirror the standard follow-up intervals of public health intervention trials:

• In Study 1, the test-retest correlation between baseline and 6-month follow-up was r = .44 (p < .001); the correlation between baseline and 12-month follow-up was r = .38 (p < .001).
• In Study 2, baseline to 6-month follow-up stability yielded r = .37 (p < .001).

While standard psychometric evaluations of stable personality traits typically anticipate test-retest coefficients exceeding .70 over brief intervals (e.g., 2 weeks), moderate coefficients over 6- to 12-month intervals are methodologically expected and ecologically valid within adolescent populations. Relationship turnover is high during emerging adulthood; participants frequently changed primary sexual partners across these measurement periods, naturally shifting the dyadic context and communication frequencies assessed by the tool.

9. Factor Analysis

The latent structural integrity of the Partner Communication Scale was established using both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) during instrument development and psychometric refinement.

Initial Extraction and Domain Identification

Initial factor extractions (utilizing principal axis factoring with promax and oblimin oblique rotations to accommodate anticipated correlations among protective communication domains) examined the original 36-item developmental pool. Items loaded robustly across five distinct latent dimensions corresponding to the hypothesized theoretical domains:

1. Pregnancy Prevention and Options (Eigenvalue > 1.0, accounting for substantial variance, characterized by items concerning future reproductive steps, birth control, and family planning).
2. Sexually Transmitted Diseases (Items indexing symptom awareness, testing, and STI prevention).
3. HIV/AIDS Specifics (Items dedicated to HIV risk, testing procedures, and joint testing).
4. Condom Negotiation (Items focused on purchase, correct application, and continuous use).
5. Partner’s History (Items assessing previous partner counts, current concurrency, and high-risk behaviors).

Item loadings on their primary latent factors generally ranged between .55 and .88, with minimal cross-loadings (< .25) following the iterative deletion of ambiguous or statistically redundant items.

Higher-Order and Brief Unidimensional Solutions

Confirmatory factor analytic structural models tested whether the five subscales load onto a single higher-order latent construct of “Protective Sexual Communication.” The higher-order model yielded strong goodness-of-fit indices (Comparative Fit Index [CFI] > .94, Tucker-Lewis Index [TLI] > .93, Root Mean Square Error of Approximation [RMSEA] ≤ .056, Standardized Root Mean Square Residual [SRMR] ≤ .048). Furthermore, when distilling the scale into a rapid 5-item screening instrument (selecting the top-loading item from each of the five structural domains), single-factor CFA models demonstrated strong factor determinacy, with standardized loadings ranging from .62 to .81, confirming that researchers can validly compute either five domain-specific subscale scores or a unified total communication composite score.

10. Instrument / Measurement Tool

• Instrument Name: Partner Communication Scale (PCS)
• Construct Assessed: Frequency and content of dyadic sexual health communication across risk-reduction domains.
• Target Population: Adolescents and emerging adults; originally developed for African American adolescent females, but psychometrically validated and applicable across diverse genders, ethnicities, and adult populations.
• Reading Level: Standardized at approximately a fourth-grade reading level.
• Administration Format: Self-administered paper-and-pencil questionnaire, computer-assisted personal interview (CAPI), or web-based survey.
• Item Count:
  • Full Comprehensive Instrument: 20 items (divided across 5 subscales of 4 items each).
  • Standard Brief Version: 5 items (one representative item per domain).
• Response Scale (Full Form): 5-point Likert scale:
  • 1 = Never
  • 2 = Rarely
  • 3 = Sometimes
  • 4 = Often
  • 5 = Always
• Response Scale (5-Item Brief Screening Form): 4-point frequency metric (0 = Never; 1 = Sometimes, 1–3 Times; 2 = Often, 4–6 Times; 3 = A Lot, 7 or More Times).
• Recall Window: Preceding 6 months (adaptable to preceding 30 days or 3 months depending on intervention follow-up schedules).
• Scoring Procedures:
  • Full 20-Item Scale: All items are positively keyed. Domain subscale scores are computed by summing items within each domain (range 4 to 20 per subscale) or calculating the domain mean (range 1.00 to 5.00). The total overall communication score is computed as the sum of all 20 items (range 20 to 100) or overall grand mean (range 1.00 to 5.00).
  • 5-Item Brief Scale: Items scored 0 to 3 are summed to yield a total score ranging from 0 to 15. Higher scores reflect greater communication frequency.
• Subscale Structural Layout (20-Item Scale):
  • Pregnancy Subscale: Items 1, 2, 3, 4
  • Sexually Transmitted Diseases (STDs) Subscale: Items 5, 6, 7, 8
  • HIV/AIDS Subscale: Items 9, 10, 11, 12
  • Condom Use Subscale: Items 13, 14, 15, 16
  • Partner’s Sexual History Subscale: Items 17, 18, 19, 20

11. Permissions & Fee and Test Year

The Partner Communication Scale was formally published in 2007 following developmental research funded by grants from the National Institute of Mental Health (NIMH; Grant numbers including R01-MH54412, R01-MH61210, and related prevention initiatives). The instrument is in the public domain for non-commercial academic, clinical, and scientific research purposes. No royalties or usage fees are required to administer, adapt, or incorporate the scale into non-profit health investigations, clinical protocols, or educational evaluations.

Researchers utilizing the scale are requested to provide appropriate scholarly attribution by citing the primary validation publication (Milhausen et al., 2007). Correspondence regarding original scale development, adaptation permissions, or psychometric questions may be directed to Robin R. Milhausen, Ph.D., Department of Family Relations and Applied Nutrition, Room 217 MINS Building, University of Guelph, Guelph, Ontario, N1G 2W1, Canada (Email: [email protected]).

12. References

• Bandura, A. (1986). Social foundations of thought and action: A social cognitive theory. Prentice-Hall.
• Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Lawrence Erlbaum Associates.
• Fisher, J. D., & Fisher, W. A. (1992). Changing AIDS-risk behavior. Psychological Bulletin, 111(3), 455–474. https://doi.org/10.1037/0033-2909.111.3.455
• Gliner, J. A., Morgan, G. A., & Harmon, J. J. (2001). Measurement reliability. Journal of the American Academy of Child and Adolescent Psychiatry, 40(4), 486–488. https://doi.org/10.1097/00004583-200104000-00021
• Milhausen, R. R., Sales, J. M., Wingood, G. M., DiClemente, R. J., Salazar, L. F., & Crosby, R. A. (2007). Validation of a Partner Communication Scale for use in HIV/AIDS prevention interventions. Journal of HIV/AIDS Prevention in Children & Youth, 8(1), 11–33. https://doi.org/10.1300/J499v08n01_02
• Rosenberg, M. (1965). Society and the adolescent self-image. Princeton University Press. https://doi.org/10.1515/9781400876136
• Sales, J. M., Milhausen, R. R., Wingood, G. M., DiClemente, R. J., Salazar, L. F., & Crosby, R. A. (2008). Validation of a parent-adolescent communication scale for use in STD/HIV prevention interventions. Health Education & Behavior, 35(3), 332–345. https://doi.org/10.1177/1090198106290802
• St. Lawrence, J. S., Chapdelaine, A. P., Devieux, J. G., O’Bannon, R. E., III, Brasfield, T. L., & Eldridge, G. D. (1999). Measuring perceived barriers to condom use: Psychometric evaluation of the Condom Barriers Scale. Assessment, 6(4), 391–404. https://doi.org/10.1177/107319119900600408

13. Items of the Scale