This study examined whether individual differences in defensive functioning help explain why people endorse conspiracy beliefs. A community sample of 516 adults completed measures of conspiracist ideation, contemporary conspiracy beliefs (CCB), and defense styles. Results showed that higher endorsement of conspiracy beliefs was associated with a more immature style, whereas the mature style showed no association, and the neurotic style yielded small, non-replicated effects. At the single defense mechanism level, splitting emerged as the only replicated predictor of conspiracist ideation. There was also a small education moderation effect, suggesting that contextual variables can shape how defenses relate to conspiracy thinking; these findings are exploratory and require replication. Furthermore, CCB was associated with general conspiracist ideation. Among socio-demographic characteristics, being left-wing and having a higher level of education were associated with lower levels of conspiracy ideation. Taken together, the findings suggest that conspiracy beliefs may, in part, serve defensive functions and that considering a continuum of defense maturity could enrich psychological accounts of conspiracist thinking. Speculative interpretations should be viewed solely as hypotheses and require confirmation in further independent samples.
Abalakina-PaapM.StephanW. G.CraigT.GregoryW. L. (1999). Beliefs in conspiracies. Political Psychology, 20(3), 637–647. https://doi.org/10.1111/0162-895X.00160
2.
American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). American Psychiatric Publishing, Inc.
AntichiL.DavidG.GianniniM. (2022). Assessing the dimensionality of a new Italian Covid-19 conspiracy beliefs questionnaire. Applied Psychology Bulletin, 80(293), 2–14. https://doi.org/10.26387/bpa.293.1
5.
AntichiL.OlceseM.PrestiaD.BarbagalloG.MiglioriniL.GianniniM. (2023). Italian validation of the Generic Conspiracist Beliefs Scale (GCBS). Applied Psychology Bulletin, 298, 99–113. https://doi.org/10.26387/bpa.2023.00016
6.
BierwiaczonekK.KunstJ. R.PichO. (2020). Belief in COVID-19 conspiracy theories reduces social distancing over time. Applied Psychology: Health and Well-Being, 12(4), 1270–1285. https://doi.org/10.1111/aphw.12223
7.
BilewiczM.WiniewskiM.KoftaM.WójcikA. (2013). Harmful ideas, the structure and consequences of anti-semitic beliefs in Poland. Political Psychology, 34(6), 821–839. https://doi.org/10.1111/pops.12024
BordeleauJ.-N. (2023). I trends: A review of conspiracy theory research: Definitions, trends, and directions for future research. International Political Science Abstracts, 73(1), 1–10. https://doi.org/10.1177/00208345231157664
10.
BordeleauJ.-N.StockemerD. (2025). On the relationship between age and conspiracy beliefs. Political Psychology, 46(5), 931–946. https://doi.org/10.1111/pops.13044
11.
BrothertonR.FrenchC. C.PickeringA. D. (2013). Measuring belief in conspiracy theories: The generic conspiracist beliefs Scale. Frontiers in Psychology, 4(279), Article 279. https://doi.org/10.3389/fpsyg.2013.00279
CalvilloD. P.RossB. J.GarciaR. J. B.SmelterT. J.RutchickA. M. (2020). Political ideology predicts perceptions of the threat of COVID-19 (and susceptibility to fake news about it). Social Psychological and Personality Science, 11(8), 1119–1128. https://doi.org/10.1177/1948550620940539
CasseseE. C.FarhartC. E.MillerJ. M. (2020). Gender differences in COVID-19 conspiracy theory belief. Politics and Gender, 16(4), 1–10. https://doi.org/10.1017/S1743923X20000409
16.
CeliaG.LausiG.GirelliL.CavicchioloE.LimoneP.GianniniA. M.CozzolinoM. (2022). COVID-19 related conspiracy beliefs and their relationship with defense strategies, emotions, powerlessness, attitudes, and time perspective. Frontiers in Psychology, 13, Article 939615. https://doi.org/10.3389/fpsyg.2022.939615
17.
CichockaA.MarchlewskaM.de ZavalaA. G. (2016). Does self-love or self-hate predict conspiracy beliefs? Narcissism, Self-Esteem, and the endorsement of conspiracy theories. Social Psychological and Personality Science, 7(2), 157–166. https://doi.org/10.1177/1948550615616170
18.
CortinovisI.FarmaT. (2000). Misurare i meccanismi di difesa attraverso il Defense Style Questionnaire a 40 item: Attendibilità dello strumento e suo utilizzo nel contesto italiano. Ricerche di Psicologia, 3/4, 127–144. https://doi.org/10.3280/RIP2000-003007
Di GiuseppeM.Zilcha-ManoS.ProutT. A.PerryJ. C.OrrùG.ConversanoC. (2020). Psychological impact of coronavirus disease 2019 among Italians during the first week of lockdown. Frontiers in Psychiatry, 11, Article 576597. https://doi.org/10.3389/fpsyt.2020.576597
22.
DouglasK. M.SuttonR. M.CichockaA. (2017). The psychology of conspiracy theories. Current Directions in Psychological Science, 26(6), 538–542. https://doi.org/10.1177/0963721417718261
DuradoniM.TostiA. E.ColombiniG.MastiF.LicataA. L.ZanobiniP.MaterassiL.GuazziniA. (2024). Promoters and barriers of vaccine hesitancy. PsychologicalReports, Article 00332941241302266. https://doi.org/10.1177/00332941241302266
25.
ElliottT. R.PerrinP. B.BellA.-S.PowersM. B.WarrenA. M. (2021). Resilience, coping, and distress among healthcare service personnel during the COVID-19 pandemic. BMC Psychiatry, 21(1), 489. https://doi.org/10.1186/s12888-021-03506-6
26.
EricksonS.FeldmanS. S.SteinerH. (1997). Defense reactions and coping strategies in normal adolescents. Child Psychiatry and Human Development, 28(1), 45–56. https://doi.org/10.1023/A:1025145119301
27.
FranksB.BangerterA.BauerM. W.HallM.NoortM. C. (2017). Beyond “Monologicality”? Exploring conspiracist worldviews. Frontiers in Psychology, 8, Article 861. https://doi.org/10.3389/fpsyg.2017.00861
28.
FreemanD.LambeS.YuL.-M.FreemanJ.ChadwickA.VaccariC.WaiteF.RosebrockL.PetitA.VanderslottS.LewandowskyS.LarkinM.InnocentiS.McShaneH.PollardA. J.LoeB. S. (2023). Injection fears and COVID-19 vaccine hesitancy. Psychological Medicine, 53(4), 1185–1195. https://doi.org/10.1017/S0033291721002609
FreudS. (1937). Analysis terminable and interminable. The International Journal of Psychoanalysis, 18, 373–405.
31.
GeröG. (1951). The concept of defense. Psychoanalytic Quarterly, 20, 565–578.
32.
GioiaF.ImperatoC.BoursierV.FranceschiniC.SchimmentiA.MusettiA. (2023). The role of defense styles and psychopathological symptoms on adherence to conspiracy theories during the COVID-19 pandemic. Scientific Reports, 13(1), 3482. https://doi.org/10.1038/s41598-023-30531-0
GoriA.TopinoE.SetteA.CramerH. (2021). Pathways to post-traumatic growth in cancer patients: Moderated mediation and single mediation analyses with resilience, personality, and coping strategies. Journal of Affective Disorders, 279, 692–700. https://doi.org/10.1016/j.jad.2020.10.044
35.
GranierF.PantaleoF.IelapiL.SoverchiaG. (2020). Three-layered psychological analysis of an epidemic: Impact and legacy of Covid-19. International Journal of Psychoanalysis and Education, 12(1), 4–14. https://doaj.org/article/d93424a0518c4512816cac6c310df485
36.
Grzesiak-FeldmanM. (2013). The effect of high-anxiety situations on conspiracy thinking. Current Psychology, 32(1), 100–118. https://doi.org/10.1007/s12144-013-9165-6
37.
HofstadterR. (2012). The paranoid style in American politics. Knopf Doubleday Publishing Group.
38.
HorowitzM. J. (1986). Stress-response syndromes: A review of posttraumatic and adjustment disorders. Hospital & Community Psychiatry, 37(3), 241–249. https://doi.org/10.1176/ps.37.3.241
39.
ImhoffR.LambertyP. (2018). How paranoid are conspiracy believers? Toward a more fine-grained understanding of the connect and disconnect between paranoia and belief in conspiracy theories. European Journal of Social Psychology, 48(7), 909–926. https://doi.org/10.1002/ejsp.2494
40.
ImhoffR.ZimmerF.KleinO.AntónioJ. H. C.BabinskaM.BangerterA.BilewiczM.BlanušaN.BovanK.BužarovskaR.CichockaA.DelouvéeS.DouglasK. M.DyrendalA.EtienneT.GjoneskaB.GrafS.GualdaE.HirschbergerG.van ProoijenJ.-W. (2022). Conspiracy mentality and political orientation across 26 countries. Nature Human Behaviour, 6(3), 392–403. https://doi.org/10.1038/s41562-021-01258-7
41.
JolleyD.DouglasK. M. (2014a). The effects of anti-vaccine conspiracy theories on vaccination intentions. PLoS One, 9(2), Article e89177. https://doi.org/10.1371/journal.pone.0089177
42.
JolleyD.DouglasK. M. (2014b). The social consequences of conspiracism: Exposure to conspiracy theories decreases intentions to engage in politics and to reduce one’s carbon footprint. British Journal of Psychology, 105(1), 35–56. https://doi.org/10.1111/bjop.12018
43.
JolleyD.DouglasK. M.SkipperY.ThomasE.CooksonD. (2021). Measuring adolescents’ beliefs in conspiracy theories: Development and validation of the Adolescent Conspiracy Beliefs Questionnaire (ACBQ). British Journal of Developmental Psychology, 39(3), 499–520. https://doi.org/10.1111/bjdp.12368
KleinM. (1930). The importance of symbol-formation in the development of the ego. The International Journal of Psychoanalysis, 11, 24–39.
46.
KnightP. (2003). Conspiracy Theories in American history: An Encyclopedia [2 volumes]. Bloomsbury Publishing USA.
47.
KramerU.DesplandJ.-N.MichelL.DrapeauM.de RotenY. (2010). Change in defense mechanisms and coping over the course of short-term dynamic psychotherapy for adjustment disorder. Journal of Clinical Psychology, 66(12), 1232–1241. https://doi.org/10.1002/jclp.20719
48.
KrausM. W.PiffP. K.Mendoza-DentonR.RheinschmidtM. L.KeltnerD. (2012). Social class, solipsism, and contextualism: How the rich are different from the poor. Psychological Review, 119(3), 546–572. https://doi.org/10.1037/a0028756
49.
LantianA.MullerD.NurraC.DouglasK. M. (2017). “I know things they don’t know!”: The role of need for uniqueness in belief in conspiracy theories. Social Psychology, 48(3), 160–173. https://doi.org/10.1027/1864-9335/a000306
50.
LingiardiV.MadedduF. (2023). I meccanismi di difesa. Teoria, valutazione, clinica (3rd ed.). Raffaello Cortina Editore.
51.
LingiardiV.McWilliamsN. (2018). Introduction to the special issue on the Psychodynamic Diagnostic Manual, 2nd Edition (PDM-2): The PDM: Yesterday, today, tomorrow. Psychoanalytic Psychology, 35(3), 289–293. https://doi.org/10.1037/pap0000188
52.
LittrellS.DiekmanA.SeeligM.PremaratneK.WuchtyS.VerdearD.KlofstadC. A.UscinskiJ. (2025). Belief in science-related conspiracy theories. Journal of Social Issues, 81(1), Article e70004. https://doi.org/10.1111/josi.70004
53.
LuytenP.CampbellC.AllisonE.FonagyP. (2020). The mentalizing approach to psychopathology: State of the art and future directions. Annual Review of Clinical Psychology, 16, 297–325. https://doi.org/10.1146/annurev-clinpsy-071919-015355
54.
MaoJ.-Y.YangS.-L.GuoY.-Y. (2020). Are individuals from lower social classes more susceptible to conspiracy theories? An explanation from the compensatory control theory. Asian Journal of Social Psychology, 23(4), 372–383. https://doi.org/10.1111/ajsp.12417
55.
McHoskeyJ. W. (1995). Case closed? On the John F. Kennedy assassination: Biased assimilation of evidence and attitude polarization. Basic and Applied Social Psychology, 17(3), 395–409. https://doi.org/10.1207/s15324834basp1703_7
56.
MillerJ. M. (2020). Do COVID-19 conspiracy theory beliefs form a monological belief System?Canadian Journal of Political Science/Revue Canadienne de Science Politique, 53(2), 319–326. https://doi.org/10.1017/S0008423920000517
57.
PertweeE.SimasC.LarsonH. J. (2022). An epidemic of uncertainty: Rumors, conspiracy theories and vaccine hesitancy. Nature Medicine, 28(3), 456–459. https://doi.org/10.1038/s41591-022-01728-z
58.
ProoijenJ.-W. vanLangeP. A. M. van. (2014). Power, politics, and paranoia: Why people are suspicious of their leaders. Cambridge University Press.
59.
SallamM.DababsehD.YaseenA.Al-HaidarA.AbabnehN. A.BakriF. G.MahafzahA. (2020). Conspiracy beliefs are associated with lower knowledge and higher anxiety levels regarding COVID-19 among students at the university of Jordan. International Journal of Environmental Research and Public Health, 17(14), Article 14. https://doi.org/10.3390/ijerph17144915
60.
Salvador CasaraB. G.SuitnerC.JettenJ. (2022). The impact of economic inequality on conspiracy beliefs. Journal of Experimental Social Psychology, 98, Article 104245. https://doi.org/10.1016/j.jesp.2021.104245
61.
SharpC.FonagyP. (2008). The parent's capacity to treat the child as a psychological agent: Constructs, measures and implications for developmental psychopathology. Social Development, 17(3), 737–754. https://doi.org/10.1111/j.1467-9507.2007.00457.x
62.
SilvermanJ.Aafjes-van DoornK. (2023). Coping and defense mechanisms: A scoping review. Clinical Psychology: Science and Practice, 30(4), 381–392. https://doi.org/10.1037/cps0000139
63.
SkinnerE. A.Zimmer-GembeckM. J. (2016). The development of coping: Stress, neurophysiology, social relationships, and resilience during childhood and adolescence. Springer.
64.
SterniskoA.CichockaA.CislakA.Van BavelJ. J. (2023). National narcissism predicts the belief in and the dissemination of conspiracy theories during the COVID-19 pandemic: Evidence from 56 countries. Personality and Social Psychology Bulletin, 49(1), 48–65. https://doi.org/10.1177/01461672211054947
65.
SterniskoA.CichockaA.Van BavelJ. J. (2020). The dark side of social movements: Social identity, non-conformity, and the lure of conspiracy theories. Current Opinion in Psychology, 35, 1–6. https://doi.org/10.1016/j.copsyc.2020.02.007
66.
SwamiV. (2012). Social psychological origins of conspiracy theories: The case of the Jewish conspiracy theory in Malaysia. Frontiers in Psychology, 3(280), Article 280. https://doi.org/10.3389/fpsyg.2012.00280
67.
TamK.-P.ChanH.-W. (2023). Conspiracy theories and climate change: A systematic review. Journal of Environmental Psychology, 91, Article 102129. https://doi.org/10.1016/j.jenvp.2023.102129
68.
TanzilliA.Di GiuseppeM.GiovanardiG.BoldriniT.CavigliaG.ConversanoC.LingiardiV. (2021). Mentalization, attachment, and defense mechanisms: A Psychodynamic Diagnostic Manual-2-oriented empirical investigation. Research in Psychotherapy: Psychopathology, Process and Outcome, 24(1), 31–41. https://doi.org/10.4081/ripppo.2021.531
69.
TaylorS.LandryC. A.PaluszekM. M.RachorG. S.AsmundsonG. J. G. (2020). Worry, avoidance, and coping during the COVID-19 pandemic: A comprehensive network analysis. Journal of Anxiety Disorders, 76, Article 102327. https://doi.org/10.1016/j.janxdis.2020.102327
70.
UscinskiJ. E.ParentJ. M. (2014). American conspiracy theories. Oxford University Press.
71.
VaillantG. E. (1977). Adaptation to life. Little, Brown.
72.
van den BosK. (2009). Making sense of life: The existential self trying to deal with personal uncertainty. Psychological Inquiry, 20(4), 197–217. https://doi.org/10.1080/10478400903333411
73.
van ProoijenJ.-W. (2016). Sometimes inclusion breeds suspicion: Self-uncertainty and a sense of belonging predict belief in conspiracy theories. European Journal of Social Psychology, 46(3), 267–279. https://doi.org/10.1002/ejsp.2157
74.
van ProoijenJ.-W. (2017). Why education predicts decreased belief in conspiracy theories. Applied Cognitive Psychology, 31(1), 50–58. https://doi.org/10.1002/acp.3301
75.
van ProoijenJ.-W.AckerM. (2015). The influence of control on belief in conspiracy theories: Conceptual and applied extensions. Applied Cognitive Psychology, 29(5), 753–761. https://doi.org/10.1002/acp.3161
76.
van ProoijenJ.-W.KrouwelA. P. M.PolletT. V. (2015). Political extremism predicts belief in conspiracy theories. Social Psychological and Personality Science, 6(5), 570–578. https://doi.org/10.1177/1948550614567356
77.
WalkerG.McCabeT. (2021). Psychological defence mechanisms during the COVID-19 pandemic: A case series. The European Journal of Psychiatry, 35(1), 41–45. https://doi.org/10.1016/j.ejpsy.2020.10.005
78.
WilliamsM. N.MarquesM. D.HillS. R.KerrJ. R.LingM. (2022). Why are beliefs in different conspiracy theories positively correlated across individuals? Testing monological network versus unidimensional factor model explanations. British Journal of Social Psychology, 61(3), 1011–1031. https://doi.org/10.1111/bjso.12518
79.
WongP. T. P. (2016). Meaning-Seeking, Self-Transcendence, and well-being. In BatthyányA. (Ed.), Logotherapy and existential analysis (pp. 311–321). Springer International Publishing. https://doi.org/10.1007/978-3-319-29424-7_27
80.
WoodM. J. (2016). Some dare call it conspiracy: Labeling something a conspiracy theory does not reduce belief in it. Political Psychology, 37(5), 695–705. https://doi.org/10.1111/pops.12285
81.
WoodM. J.DouglasK. M.SuttonR. M. (2012). Dead and alive: Beliefs in contradictory conspiracy theories. Social Psychological and Personality Science, 3(6), 767–773. https://doi.org/10.1177/1948550611434786
82.
WoodM. J.GrayD. (2019). Right-wing authoritarianism as a predictor of pro-establishment versus anti-establishment conspiracy theories. Personality and Individual Differences, 138, 163–166. https://doi.org/10.1016/j.paid.2018.09.036
Zeigler-HillV.ChadhaS.OstermanL. (2008). Psychological defense and self-esteem instability: Is defense style associated with unstable self-esteem?Journal of Research in Personality, 42(2), 348–364. https://doi.org/10.1016/j.jrp.2007.06.002
85.
ZhaoQ.ProoijenJ.-W. V.SpadaroG. (2024). Coping capacity attenuates the effect of natural disaster risk on conspiracy beliefs. Journal of Environmental Psychology, 97, Article 102363. https://doi.org/10.1016/j.jenvp.2024.102363
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