This scoping review examines how uncertainty has been measured in science communication research, analyzing 58 studies published between 1976 and 2024. The review identified 68 uncertainty measures, categorized into three main types: (1) trait uncertainty, (2) state uncertainty, and (3) uncertainty discrepancy. While most measures demonstrated good internal reliability, evidence for the validity of scales was limited, particularly for newly developed scales. The analysis reveals significant fragmentation in measurement approaches and a concerning reliance on single-item and unidimensional measures given the complexity of the construct. Science communication research would benefit from more rigorous scale development, standardized measurement approaches, and cross-cultural validation of uncertainty scales.
AdamsDRRatcliffCLPokharelMJensenJDLiaoY (2024) Communicating scientific uncertainty in the early stages of the COVID-19 pandemic: A message experiment. Risk Analysis44: 1700–1715.
2.
AfifiWAWeinerJL (2004) Toward a theory of motivated information management. Communication Theory14(2): 167–190.
3.
AllenMSIliescuDGreiffS (2022) Single item measures in psychological science. European Journal of Psychological Assessment38: 1–5.
4.
AmoakoESkellyAHRossenEK (2008) Outcomes of an intervention to reduce uncertainty among African American women with diabetes. Western Journal of Nursing Research30(8): 928–942.
5.
BabrowAS (1992) Communication and problematic integration: Understanding diverging probability and value, ambiguity, ambivalence, and impossibility. Communication Theory2(2): 95–130.
6.
BabrowAS (2001) Uncertainty, value, communication, and problematic integration. Journal of Communication51(3): 553–573.
7.
BabrowASKaschCRFordLA (1998) The many meanings of uncertainty in illness: Toward a systematic accounting. Health Communication10(1): 1–23.
8.
BergerCRCalabreseRJ (1975) Some Explorations in Initial Interaction and Beyond: Toward a Developmental Theory of Interpersonal Communication. Human Communication Research1(2): 99–112. https://doi.org/10.1111/j.1468-2958.1975.tb00258.x
9.
BerlyneDE (1957) Uncertainty and conflict: A point of contact between information-theory and behavior-theory concepts. Psychological Review64(6, Pt.1): 329–339. https://doi.org/10.1037/h0041135
10.
BrashersDE (2001) Communication and uncertainty management. Journal of Communication51: 477–197.
11.
BrashersDEBasingerEDRintamakiLSCaughlinJPParaM (2017) Taking control: The efficacy and durability of a peer-led uncertainty management intervention for people recently diagnosed with HIV. Health Communication32(1): 11–21. https://doi.org/10.1080/10410236.2015.1089469
12.
BroomellSBKanePB (2017) Public perception and communication of scientific uncertainty. Journal of Experimental Psychology: General146(2): 286–304.
13.
BuhrKDugasMJ (2002) The intolerance of uncertainty scale: Psychometric properties of the English version. Behaviour Research and Therapy40(8): 931–945.
14.
CarcioppoloNYangFYangQ (2016) Reducing, maintaining, or escalating uncertainty? The development and validation of four uncertainty preference scales related to cancer information seeking and avoidance. Journal of Health Communication21(9): 979–988.
15.
ChangC (2015) Motivated processing: How people perceive news covering novel or contradictory health research findings. Science Communication37(5): 602–634.
16.
CheungGWCooper-ThomasHDLauRSWangLC (2024) Reporting reliability, convergent and discriminant validity with structural equation modeling: A review and best-practice recommendations. Asia Pacific Journal of Management41(2): 745–783.
17.
CrowleyJPBleakleyASilkKYoungDGLambeJL (2021) Uncertainty management and curve flattening behaviors in the wake of COVID-19’s first wave. Health Communication36(1): 32–41.
18.
DiamantopoulosASarstedtMFuchsCWilczynskiPKaiserS (2012) Guidelines for choosing between multi-item and single-item scales for construct measurement: A predictive validity perspective. Journal of the Academy of Marketing Science40(3): 434–449.
19.
FordLABabrowASStohlC (1996) Social support messages and the management of uncertainty in the experience of breast cancer: An application of problematic integration theory. Communication Monographs63(3): 189–207.
20.
FreestonMRhéaumeJLetarteHDugasMJLadouceurR (1994) Why do people worry?Personality and Individual Differences17(6): 791–802.
21.
FreestonMTipladyAMawnLBottesiGThwaitesS (2020) Towards a model of uncertainty distress in the context of Coronavirus (COVID-19). The Cognitive Behaviour Therapist13: e31.
22.
FrewerLJMilesSBrennanMKuznesofSNessMNessM, et al. (2002) Public preferences for informed choice under conditions of risk uncertainty. Public Understanding of Science11: 363–372.
23.
GeorgeDMalleryP (2019) IBM SPSS Statistics 26 Step by Step: A Simple Guide and Reference, 6th edn. London: Routledge.
24.
GillmanASScharnetzkiLBoydPFerrerRAKleinWMHanPK (2023) Perceptions and tolerance of uncertainty: Relationship to trust in COVID-19 health information and vaccine hesitancy. Journal of Behavioral Medicine46(1): 40–53.
25.
GorissenSLiaoYJensenJDJohnKK (2025) Does scientific uncertainty alter public perception of HIV-cure science? A message experiment with U.S. adults. AIDS Care37: 1003–1014.
26.
GudykunstWB (1998) Applying anxiety\uncertainty management (AUM) Theory to intercultural adjustment training. International Journal of Intercultural Relations22(2): 227–250.
27.
GustafsonARiceRE (2020) A review of the effects of uncertainty in public science communication. Public Understanding of Science29(6): 614–633.
28.
GustafsonAGustafsonARiceRERiceRE (2019) The effects of uncertainty frames in three science communication topics. Science Communication41: 679–706.
29.
GustafsonAT (2019) The nature and effects of uncertainty frames in science communication. ProQuest Information & Learning.
30.
HanPKKleinWMKillamBLehmanTMassettHFreedmanAN, et al. (2012) Representing randomness in the communication of individualized cancer risk estimates: Effects on cancer risk perceptions, worry, and subjective uncertainty about risk. Patient Education & Counseling86(1): 106–113.
31.
HanPKJKleinWMPAroraNK (2011a) Varieties of uncertainty in health care: A conceptual taxonomy. Medical Decision Making: An International Journal of the Society for Medical Decision Making31(6): 828–838.
32.
HanPKJKleinWMPLehmanTKillamBMassettHFreedmanAN (2011b) Communication of uncertainty regarding individualized cancer risk estimates: Effects and influential factors. Medical Decision Making31(2): 354–366.
33.
HanPKJMoserRPKleinWMP (2006) Perceived ambiguity about cancer prevention recommendations: Relationship to perceptions of cancer preventability, risk, and worry. Journal of Health Communication11(Suppl. 1): 51–69.
34.
HanPKJReeveBBMoserRPKleinWMP (2009) Aversion to ambiguity regarding medical tests and treatments: Measurement, prevalence, and relationship to sociodemographic factors. Journal of Health Communication14(6): 556–572.
35.
HanPKJScharnetzkiESchererAMThorpeALaryCWaterstonLB, et al. (2021) Communicating scientific uncertainty about the COVID-19 pandemic: Online experimental study of an uncertainty-normalizing strategy. Journal of Medical Internet Research23(4). https://doi.org/10.2196/27832
36.
HandmerJProudleyB (2007) Communicating uncertainty via probabilities: The case of weather forecasts. Environmental Hazards7(2): 79–87.
37.
HoHWatanabeT (2018) The roles of three types of knowledge and perceived uncertainty in explaining risk perception, acceptability, and self-protective response-a case study on endocrine disrupting surfactants. International Journal of Environmental Research and Public Health15(2): 296.
38.
HuangYYangC (2020) A metacognitive approach to reconsidering risk perceptions and uncertainty: Understand information seeking during COVID-19. Science Communication42(5): 616–642.
39.
JensenJD (2008) Scientific uncertainty in news coverage of cancer research: Effects of hedging on scientists’ and journalists’ credibility. Human Communication Research34: 347–369.
40.
JensenJDCarcioppoloNKingAJKingAJBernatJKBernatJK, et al. (2011) Including limitations in news coverage of cancer research: Effects of news hedging on fatalism, medical skepticism, patient trust, and backlash. Journal of Health Communication16: 486–503.
41.
JuIOhsJParkTHinsleyA (2022) Examining the Theory of Motivated Information Management (TMIM) in the COVID-19 pandemic. Journal of Health Communication27(5): 326–342.
42.
JungJMKellarisJJ (2004) Cross-national differences in proneness to scarcity effects: The moderating roles of familiarity, uncertainty avoidance, and need for cognitive closure. Psychology & Marketing21(9): 739–753.
43.
KalkeKStuddHScherrCL (2021) The communication of uncertainty in health: A scoping review. Patient Education and Counseling104(8): 1945–1961.
44.
KetelaarPEvan’t RietJThorbjornsenHBuijzenM (2018) Positive uncertainty: The benefit of the doubt in advertising. International Journal of Advertising37(2): 256–269.
45.
KuangK (2018) Reconceptualizing uncertainty in illness: Commonalities, variations, and the multidimensional nature of uncertainty. Annals of the International Communication Association42(3): 181–206.
46.
KuangKGettingsPE (2021) Interactions among actual uncertainty, desired uncertainty, and uncertainty discrepancy on anxiety and information seeking. Journal of Health Communication26(2): 127–136.
47.
LammersWFerrariSWenmackersSPattynVVan de WalleS (2024) Theories of uncertainty communication: An interdisciplinary literature review. Science Communication46(3): 332–365.
48.
LeeYCWuWL (2015) Effects of medical disputes on Internet communications of negative emotions and negative online word-of-mouth. Psychological Reports117(1): 251–270.
49.
LiJ-YWenTJMcKeeverRKimJK (2021) Uncertainty and negative emotions in parental decision-making on childhood vaccinations: Extending the theory of planned behavior to the context of conflicting health information. Journal of Health Communication26(4): 215–224.
50.
LiQLuoCFYeJQBianZKSunWYZhouM, et al. (2024) Relationship between illness uncertainty and family resilience among caregivers of stroke patients in Chinese nuclear families: The mediating role of perceived stress. Patient Preference and Adherence18: 1095–1105.
51.
LinkEBaumannE (2022) Efficacy assessments as predictors of uncertainty preferences: Findings of a cross-sectional German study. European Journal of Health Psychology29(3): 134–144.
52.
MattaSRogovaNLuna-CortésG (2022) Investigating tolerance of uncertainty, COVID-19 concern, and compliance with recommended behavior in four countries: The moderating role of mindfulness, trust in scientists, and power distance. Personality and Individual Differences186: 111352.
53.
MatthiasMSBabrowAS (2007) Problematic integration of uncertainty and desire in pregnancy. Qualitative Health Research17(6): 786–798.
54.
MillikenFJ (1987) Three types of perceived uncertainty about the environment: State, effect, and response uncertainty. Academy of Management Review12(1): 133–143.
55.
MishelMH (1981) The measurement of uncertainty in illness. Nursing Research30(5): 258.
56.
MorseCVolkmanJSamterWTrunzoJMcClureKKohnC, et al. (2013) The influence of uncertainty and social support on information seeking concerning illicit stimulant use among young adults. Health Communication28(4): 366–377.
57.
MortonTARabinovichAMarshallDBretschneiderP (2011) The future that may (or may not) come: How framing changes responses to uncertainty in climate change communications. Global Environmental Change21(1): 103–109.
58.
NaglerRHVogelRIGollustSEYzerMCRothmanAJ (2022) Effects of prior exposure to conflicting health information on responses to subsequent unrelated health messages: Results from a population-based longitudinal experiment. Annals of Behavioral Medicine56(5): 498–511.
59.
NeubergerLSilkKJ (2016) Uncertainty and information-seeking patterns: A test of competing hypotheses in the context of health care reform. Health Communication31(7): 892–902.
60.
NorrAMCapronDWSchmidtNB (2014) Medical information seeking: Impact on risk for anxiety psychopathology. J Behav Ther Exp Psychiatry45(3): 402–407.
61.
O’ConnorAM (1995) Validation of a decisional conflict scale. Medical Decision Making15(1): 25–30.
62.
PerraultEK (2018) Adding multimedia cues to medical providers’ online biographies: Do pictures, video, and b-roll matter?Journal of Health Communication23(5): 462–469.
63.
PetersonTRThompsonJL (2008) Environmental risk communication: Responding to challenges of complexity and uncertainty. In Handbook of Risk and Crisis Communication. Routledge.
64.
PidgeonNFischhoffB (2013) The role of social and decision sciences in communicating uncertain climate risks. In: ArvaiJRiversL (eds) Effective Risk Communication. London: Routledge.
65.
RabinovichAMortonTA (2012) Unquestioned answers or unanswered questions: Beliefs about science guide responses to uncertainty in climate change risk communication. Risk Analysis32: 992–1002.
66.
RainsSATukachinskyR (2015) An examination of the relationships among uncertainty, appraisal, and information-seeking behavior proposed in uncertainty management theory. Health Communication30(4): 339–349.
67.
RatcliffCLFleerackersAWickeRHarvillBKingAJJensenJD (2024) Framing COVID-19 preprint research as uncertain: A mixed-method study of public reactions. Health Communication39(2): 283–296.
68.
RatcliffCLHarvillBWickeR (2023) Understanding public preferences for learning about uncertain science: Measurement and individual difference correlates. Frontiers in Communication8: 1245786.
69.
RatcliffCLWickeRHarvillB (2022) Communicating uncertainty to the public during the COVID-19 pandemic: A scoping review of the literature. Annals of the International Communication Association46: 260–289.
70.
RauscherEA (2017) Investigating uncertainty in genetic counseling encounters: Managing information about genetic cancer risk. Journal of Health Communication22(11): 896–904.
71.
RetzbachJOttoLMaierM (2016) Measuring the perceived uncertainty of scientific evidence and its relationship to engagement with science. Public Understanding of Science25(6): 638–655.
SchuldtJPMcComasKABurgeCA (2021) Intersecting frames in communicating environmental risk and uncertainty. Journal of Risk Research24(5): 562–573.
74.
SevertsonDJ (2015) Testing Map Features Designed to Convey the Uncertainty of Cancer Risk: Insights Gained From Assessing Judgments of Information Adequacy and Communication Goals. Science Communication37(1): 59–88.
75.
ShannonCE (1948) A mathematical theory of communication. The Bell System Technical Journal, 27(3), 379–423.
76.
SmithsonM (1999) Conflict aversion: Preference for ambiguity vs conflict in sources and evidence. Organizational Behavior and Human Decision Processes79(3): 179–198.
77.
SoJKuangKChoH (2019) Information seeking upon exposure to risk messages: Predictors, outcomes, and mediating roles of health information seeking. Communication Research46(5): 663–687.
78.
SonJLeeJLarsenKRWooJ (2020) Understanding the uncertainty of disaster tweets and its effect on retweeting: The perspectives of uncertainty reduction theory and information entropy. Journal of the Association for Information Science & Technology71(10): 1145–1161.
79.
SongMKSereikaSM (2006) An evaluation of the decisional conflict scale for measuring the quality of end-of-life decision making. Patient Education and Counseling61(3): 397–404.
80.
StavrovaOKleinbergBEvansAMIvanovićM (2024) Expressions of uncertainty in online science communication hinder information diffusion. PNAS Nexus3(10): pgae439.
81.
ThompsonNMBevanJLSparksL (2012) Healthcare reform information-seeking: Relationships with uncertainty, uncertainty discrepancy, and health self-efficacy. Journal of Communication in Healthcare5(1): 56–66.
82.
TriccoACLillieEZarinWO’BrienKKColquhounHLevacD, et al. (2018) PRISMA extension for scoping reviews (PRISMA-ScR): Checklist and explanation. Annals of Internal Medicine169(7): 467–473.
83.
van der BlesAMvan der LindenSFreemanALJMitchellJGalvaoABZavalL, et al. (2019) Communicating uncertainty about facts, numbers and science. Royal Society Open Science6(5): 181870.
84.
van RynMHardemanRRPhelanSMBurkeSEPrzedworskiJAllenML, et al. (2014) Psychosocial predictors of attitudes toward physician empathy in clinical encounters among 4732 1st year medical students: A report from the CHANGES study. Patient Education and Counseling96(3): 367–375.
85.
VishwanathA (2003) Comparing online information effects: A cross-cultural comparison of online information and uncertainty avoidance. Communication Research30(6): 579–598.
86.
WangXLiuZ (2019) Online engagement in social media: A cross-cultural comparison. Computers in Human Behavior97: 137–150.
87.
YoonHJ (2013) Understanding schema incongruity as a process in advertising: Review and future recommendations. Journal of Marketing Communications19(5): 360–376.
88.
ZimbresTMBellRAMillerLMSZhangJ (2021) When media health stories conflict: Test of the Contradictory Health Information Processing (CHIP) model. Journal of Health Communication26(7): 460–472.
89.
ZimbresTMBellRAMillerLMSZhangJ (2022) Contradictory and complex health messages: An experimental test of different sources of uncertainty. Communication Research Reports39(3): 147–159.
