Psychology
Substance Use and Subclinical Psychosis Symptoms
Document Type
Oral Presentation
Location
Indianapolis, IN
Subject Area
Psychology
Start Date
11-4-2014 2:30 PM
End Date
11-4-2014 4:30 PM
Sponsor
Joel Martin (Butler University)
Description
Research shows that there may be a connection between substance use and the expression of positive psychosis symptoms, most notably delusions and hallucinations (see Stefanis, et al. 2004). While substances such as marijuana have received the greatest amount of attention in the literature (e.g., Grech et al.., 2005), other substances such as stimulants (e.g., Curran et al., 2004), tobacco (e.g., Baeza et al., 2009), and alcohol (e.g., Compton et al., 2009) have been implicated in exacerbating the risk of psychosis onset. Further, there is mounting evidence that many psychiatric disorders, including "serious" mental illnesses such as schizophrenia, are not discrete categories but rather the tails of dimensions distributed in the general population (e.g., van Os & Linscott, 2012). Often referred to as "delusion proneness" and "hallucination proneness," subclinical levels of delusional ideation and hallucinatory experiences (respectively) have emerged as useful ways to understand more about how individuals with psychosis understand their world. The present study seeks to further explore and describe the relationship between adolescent substance use and the subclinical psychotic symptoms of delusions and hallucinations. Measures of subclinical delusional ideation and hallucinatory experiences will be compared to the frequency and duration of substances used and the amount used at peak consumption in a college-age sample from Butler University and Purdue University through an online survey. We hypothesize that those who have consumed higher amounts of substances for longer amounts of time will experience greater amounts of delusional ideation and hallucinatory experiences.
Baeza I, Graell M, Moreno D, Castro-Fornieles J, Parellada, M., González-Pinto, A, Paya, B., Soutullo, C., de la Sema, E., & Arango, C. (2009). Cannabis use in children and adolescents with first episode psychosis: influence on psychopathology and short-term outcome (CAFEPS study). Schizophr. Res. 113(2–3):129–37
Compton, M., Kelley, M., Ramsay, C., Pringle, M., Goulding, S., Esterberg, M., .Walker, E. (2009). Association of pre-onset cannabis, alcohol, and tobacco use with age at onset of prodrome and age at onset of psychosis in first-episode patients.American Journal of Psychiatry,166(11), 1251-1257.
Curran, C., Byrappa, N., & Mcbride, A. (2004). Stimulant psychosis: systematic review.The British Journal of Psychiatry,185(3), 196-204.
Grech A, Van Os J, Jones PB, Lewis SW, Murray RM. 2005. Cannabis use and outcome of recent onset psychosis. Eur. Psychiatry 20(4):349–53
Stefanis, N. C., Delespaul, P., Henquet, C., Bakoula, C., Stefanis, C. N., & Van Os, J. (2004). Early adolescent cannabis exposure and positive and negative dimensions of psychosis. Addiction,10(1111), 1333-1341.
Substance Use and Subclinical Psychosis Symptoms
Indianapolis, IN
Research shows that there may be a connection between substance use and the expression of positive psychosis symptoms, most notably delusions and hallucinations (see Stefanis, et al. 2004). While substances such as marijuana have received the greatest amount of attention in the literature (e.g., Grech et al.., 2005), other substances such as stimulants (e.g., Curran et al., 2004), tobacco (e.g., Baeza et al., 2009), and alcohol (e.g., Compton et al., 2009) have been implicated in exacerbating the risk of psychosis onset. Further, there is mounting evidence that many psychiatric disorders, including "serious" mental illnesses such as schizophrenia, are not discrete categories but rather the tails of dimensions distributed in the general population (e.g., van Os & Linscott, 2012). Often referred to as "delusion proneness" and "hallucination proneness," subclinical levels of delusional ideation and hallucinatory experiences (respectively) have emerged as useful ways to understand more about how individuals with psychosis understand their world. The present study seeks to further explore and describe the relationship between adolescent substance use and the subclinical psychotic symptoms of delusions and hallucinations. Measures of subclinical delusional ideation and hallucinatory experiences will be compared to the frequency and duration of substances used and the amount used at peak consumption in a college-age sample from Butler University and Purdue University through an online survey. We hypothesize that those who have consumed higher amounts of substances for longer amounts of time will experience greater amounts of delusional ideation and hallucinatory experiences.
Baeza I, Graell M, Moreno D, Castro-Fornieles J, Parellada, M., González-Pinto, A, Paya, B., Soutullo, C., de la Sema, E., & Arango, C. (2009). Cannabis use in children and adolescents with first episode psychosis: influence on psychopathology and short-term outcome (CAFEPS study). Schizophr. Res. 113(2–3):129–37
Compton, M., Kelley, M., Ramsay, C., Pringle, M., Goulding, S., Esterberg, M., .Walker, E. (2009). Association of pre-onset cannabis, alcohol, and tobacco use with age at onset of prodrome and age at onset of psychosis in first-episode patients.American Journal of Psychiatry,166(11), 1251-1257.
Curran, C., Byrappa, N., & Mcbride, A. (2004). Stimulant psychosis: systematic review.The British Journal of Psychiatry,185(3), 196-204.
Grech A, Van Os J, Jones PB, Lewis SW, Murray RM. 2005. Cannabis use and outcome of recent onset psychosis. Eur. Psychiatry 20(4):349–53
Stefanis, N. C., Delespaul, P., Henquet, C., Bakoula, C., Stefanis, C. N., & Van Os, J. (2004). Early adolescent cannabis exposure and positive and negative dimensions of psychosis. Addiction,10(1111), 1333-1341.