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Tom Freeman

Dr

 https://orcid.org/0000-0002-5667-507X

  • 10 WEST 2.42

Accepting Doctoral Students

20092020

Research output per year

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Research Output

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Article
2020

Acute effects of cannabinoids on addiction endophenotypes are moderated by genes encoding the CB1 receptor and FAAH enzyme

Hindocha, C., Freeman, T. P., Schafer, G., Gardner, C., Bloomfield, M. A. P., Bramon, E., Morgan, C. J. A. & Curran, H. V., 31 May 2020, In : Addiction Biology. 25, 3, e12762.

Research output: Contribution to journal › Article

Open Access
4 Citations (Scopus)

Acute effects of cannabis on speech illusions and psychotic-like symptoms: two studies testing the moderating effects of cannabidiol and adolescence

Mokrysz, C., Shaban, N. D. C., Freeman, T. P., Lawn, W., Pope, R. A., Hindocha, C., Freeman, A., Wall, M. B., Bloomfield, M. A. P., Morgan, C. J. A., Nutt, D. J. & Curran, H. V., 28 Apr 2020, In : Psychological Medicine. p. 1-9 9 p.

Research output: Contribution to journal › Article

Open Access
File
59 Downloads (Pure)

Adverse effects of cannabidiol: a systematic review and meta-analysis of randomized clinical trials

Chesney, E., Oliver, D., Green, A., Sovi, S., Wilson, J., Englund, A., Freeman, T. P. & McGuire, P., 8 Apr 2020, In : Neuropsychopharmacology.

Research output: Contribution to journal › Article

1 Citation (Scopus)

Association of extent of cannabis use and psychotic like intoxication experiences in a multi-national sample of first episode psychosis patients and controls

Sami, M., Quattrone, D., Ferraro, L., Tripoli, G., Cascia, E. L., Gayer-Anderson, C., Selten, J-P., Arango, C., Bernardo, M., Tarricone, I., Tortelli, A., Gatto, G., Del Peschio, S., Del-Ben, C. M., Rutten, B. P., Jones, P. B., van Os, J., de Haan, L., Morgan, C., Lewis, C. & 5 others, Bhattacharyya, S., Freeman, T. P., Lynskey, M., Murray, R. M. & Forti, M. D., 28 Apr 2020, In : Psychological Medicine. p. 1-9 9 p.

Research output: Contribution to journal › Article

Open Access
File
1 Citation (Scopus)
2 Downloads (Pure)

Association of High-Potency Cannabis Use With Mental Health and Substance Use in Adolescence

Hines, L. A., Freeman, T. P., Gage, S. H., Zammit, S., Hickman, M., Cannon, M., Munafo, M., MacLeod, J. & Heron, J., 27 May 2020, In : JAMA Psychiatry.

Research output: Contribution to journal › Article

Open Access

Cannabidiol for the treatment of cannabis use disorder: Phase IIa double-blind placebo-controlled randomised adaptive Bayesian dose-finding trial

Freeman, T., Hindocha, C., Baio, G., Shaban, N., Thomas, E., Astbury, D., Freeman, A., Lees, R. H., Craft, S., Morrison, P., Bloomfield, M., O'Ryan, D., Kinghorn, J., Morgan, C., Mofeez, A. & Curran, H. V., 2 Jun 2020, (Acceptance date) In : The Lancet Psychiatry.

Research output: Contribution to journal › Article

Daily use of high-potency cannabis is associated with more positive symptoms in first-episode psychosis patients: the EU-GEI case-control study

EU-GEI group, 18 Mar 2020, In : Psychological Medicine. p. 1-9 9 p.

Research output: Contribution to journal › Article

Open Access
File
2 Downloads (Pure)

Do AKT1, COMT and FAAH influence reports of acute cannabis intoxication experiences in patients with first episode psychosis, controls and young adult cannabis users?

Hindocha, C., Quattrone, D., Freeman, T. P., Murray, R. M., Mondelli, V., Breen, G., Curtis, C., Morgan, C. J. A., Valerie Curran, H. & Di Forti, M., 12 May 2020, In : Translational Psychiatry. 10, 1, p. 143 143.

Research output: Contribution to journal › Article

Open Access
2019

Changes in the composition of cannabis from 2000-2017 in Denmark: Analysis of confiscated samples of cannabis resin

Thomsen, K. R., Lindholst, C., Thylstrup, B., Kvamme, S., Reitzel, L. A., Worm-Leonhard, M., Englund, A., Freeman, T. P. & Hesse, M., 1 Aug 2019, In : Experimental and Clinical Psychopharmacology. 27, 4, p. 402-411 10 p.

Research output: Contribution to journal › Article

Open Access
File
2 Citations (Scopus)
47 Downloads (Pure)

Characterising heterogeneity in the use of different cannabis products: Latent class analysis with 55 000 people who use cannabis and associations with severity of cannabis dependence

Craft, S., Winstock, A., Ferris, J., Mackie, C., Lynskey, M. T. & Freeman, T. P., 13 Oct 2019, In : Psychological Medicine.

Research output: Contribution to journal › Article

Open Access
File
1 Citation (Scopus)
49 Downloads (Pure)

Dissociable effects of cannabis with and without cannabidiol on the human brain’s resting-state functional connectivity

Wall, M. B., Pope, R., Freeman, T. P., Kowalczyk, O. S., Demetriou, L., Mokrysz, C., Hindocha, C., Lawn, W., Bloomfield, M. A. P., Freeman, A. M., Feilding, A., Nutt, D. J. & Curran, H. V., 1 Jul 2019, In : Journal of Psychopharmacology. 33, 7, p. 822-830 9 p.

Research output: Contribution to journal › Article

Open Access
File
10 Citations (Scopus)
17 Downloads (Pure)

Increasing potency and price of cannabis in Europe, 2006-16

Freeman, T. P., Groshkova, T., Cunningham, A., Sedefov, R., Griffiths, P. & Lynskey, M. T., 1 Jun 2019, In : Addiction. 114, 6, p. 1015-1023 9 p.

Research output: Contribution to journal › Article

Open Access
17 Citations (Scopus)

Medicinal use of cannabis based products and cannabinoids

Freeman, T. P., Hindocha, C., Green, S. F. & Bloomfield, M. A. P., 4 Apr 2019, In : British Medical Journal. 365, 7 p., l1141.

Research output: Contribution to journal › Article

Open Access
22 Citations (Scopus)

New trends in cannabis potency in USA and Europe during the last decade (2008-2017)

Chandra, S., Radwan, M. M., Majumdar, C. G., Church, J. C., Freeman, T. P. & ElSohly, M. A., 1 Feb 2019, In : European Archives of Psychiatry and Clinical Neuroscience. 269, 1, p. 5-15 11 p.

Research output: Contribution to journal › Article

Open Access
File
46 Citations (Scopus)
18 Downloads (Pure)

'Standard THC Units': a proposal to standardise dose across all cannabis products and methods of administration

Freeman, T. P. & Lorenzetti, V., 12 Oct 2019, In : Addiction.

Research output: Contribution to journal › Article

12 Citations (Scopus)

The contribution of cannabis use to variation in the incidence of psychotic disorder across Europe (EU-GEI): a multicentre case-control study

The EU_GEI WP2 Group, 1 May 2019, In : The Lancet Psychiatry. 6, 5, p. 427-436 10 p.

Research output: Contribution to journal › Article

Open Access
100 Citations (Scopus)

The effects of psychosocial stress on dopaminergic function and the acute stress response

Bloomfield, M. A. P., McCutcheon, R. A., Kempton, M., Freeman, T. P. & Howes, O., 12 Nov 2019, In : eLife. 8, p. 1-22 22 p.

Research output: Contribution to journal › Article

Open Access
3 Citations (Scopus)

Value-based decision-making of cigarette and nondrug rewards in dependent and occasional cigarette smokers: An FMRI study

Lawn, W., Mithchener, L., Freeman, T. P., Benattayallah, A., Bisby, J. A., Wall, M. B., Dodds, C. M., Curran, H. V. & Morgan, C. J. A., 22 Jul 2019, In : Addiction Biology. e12802.

Research output: Contribution to journal › Article

Which biological and self-report measures of cannabis use predict cannabis dependency and acute psychotic-like effects?

Curran, H. V., Hindocha, C., Morgan, C. J. A., Shaban, N., Das, R. K. & Freeman, T. P., 31 Jul 2019, In : Psychological Medicine. 49, 9, p. 1574-1580 7 p.

Research output: Contribution to journal › Article

Open Access
13 Citations (Scopus)
2018

Cannabidiol reverses attentional bias to cigarette cues in a human experimental model of tobacco withdrawal

Hindocha, C., Freeman, T. P., Grabski, M., Stroud, J. B., Crudgington, H., Davies, A. C., Das, R. K., Lawn, W., Morgan, C. J. A. & Curran, H. V., 2 Aug 2018, In : Addiction. 113, 9, p. 1696-1705 10 p.

Research output: Contribution to journal › Article

Open Access
16 Citations (Scopus)

Cannabis Dampens the Effects of Music in Brain Regions Sensitive to Reward and Emotion

Freeman, T. P., Pope, R. A., Wall, M. B., Bisby, J. A., Luijten, M., Hindocha, C., Mokrysz, C., Lawn, W., Moss, A., Bloomfield, M. A. P., Morgan, C. J. A., Nutt, D. J. & Curran, H. V., 1 Jan 2018, In : International Journal of Neuropsychopharmacology. 21, 1, p. 21-32 12 p.

Research output: Contribution to journal › Article

Open Access
7 Citations (Scopus)

Changes in cannabis potency and first-time admissions to drug treatment: a 16-year study in the Netherlands

Freeman, T. P., van der Pol, P., Kuijpers, W., Wisselink, J., Das, R. K., Rigter, S., van Laar, M., Griffiths, P., Swift, W., Niesink, R. & Lynskey, M. T., 31 Oct 2018, In : Psychological Medicine. 48, 14, p. 2346-2352 7 p.

Research output: Contribution to journal › Article

Open Access
File
34 Citations (Scopus)
45 Downloads (Pure)

Individual and combined effects of acute delta-9-tetrahydrocannabinol and cannabidiol on psychotomimetic symptoms and memory function

Morgan, C. J. A., Freeman, T. P., Hindocha, C., Schafer, G., Gardner, C. & Curran, H. V., 5 Sep 2018, In : Translational Psychiatry. 8, 1, p. 1-10 10 p., 181.

Research output: Contribution to journal › Article

Open Access
22 Citations (Scopus)

Psilocybin with psychological support improves emotional face recognition in treatment-resistant depression

Stroud, J. B., Freeman, T. P., Leech, R., Hindocha, C., Lawn, W., Nutt, D. J., Curran, H. V. & Carhart-Harris, R. L., 1 Feb 2018, In : Psychopharmacology. 235, 2, p. 459-466 8 p.

Research output: Contribution to journal › Article

Open Access
13 Citations (Scopus)

The Acute Effects of a Dopamine D3 Receptor Preferring Agonist on Motivation for Cigarettes in Dependent and Occasional Cigarette Smokers

Lawn, W., Freeman, T. P., East, K., Gaule, A., Aston, E. R., Bloomfield, M. A. P., Das, R. K., Morgan, C. J. A. & Curran, H. V., 7 Jun 2018, In : Nicotine & Tobacco Research. 20, 7, p. 800-809 10 p.

Research output: Contribution to journal › Article

Open Access
7 Citations (Scopus)

The effects of cannabidiol on impulsivity and memory during abstinence in cigarette dependent smokers

Hindocha, C., Freeman, T. P., Grabski, M., Crudgington, H., Davies, A. C., Stroud, J. B., Das, R. K., Lawn, W., Morgan, C. J. A. & Curran, H. V., 15 May 2018, In : Scientific Reports. 8, 1, p. 1-7 7 p., 7568.

Research output: Contribution to journal › Article

Open Access
8 Citations (Scopus)
2017

Acute memory and psychotomimetic effects of cannabis and tobacco both 'joint' and individually: a placebo-controlled trial

Hindocha, C., Freeman, T. P., Xia, J. X., Shaban, N. D. C. & Curran, H. V., 1 Nov 2017, In : Psychological Medicine. 47, 15, p. 2708-2719 12 p.

Research output: Contribution to journal › Article

Open Access
35 Citations (Scopus)

Anatomy of a Joint: Comparing Self-Reported and Actual Dose of Cannabis and Tobacco in a Joint, and How These Are Influenced by Controlled Acute Administration

Hindocha, C., Freeman, T. P. & Curran, H. V., 2017, In : Cannabis and Cannabinoid Research. 2, 1, p. 217-223 7 p.

Research output: Contribution to journal › Article

Open Access
11 Citations (Scopus)

Individual and combined effects of cannabis and tobacco on drug reward processing in non-dependent users

Hindocha, C., Lawn, W., Freeman, T. P. & Curran, H. V., 1 Nov 2017, In : Psychopharmacology. 234, 21, p. 3153-3163 11 p.

Research output: Contribution to journal › Article

Open Access
9 Citations (Scopus)

Psychiatric Co-morbidity in Ketamine and Methamphetamine Dependence: a Retrospective Chart Review

Tang, W. K., Liang, H., Lin, Y., Zhang, C., Tang, A., Chan, F., Freeman, T. P. & Ungvari, G. S., 1 Aug 2017, In : International Journal of Mental Health and Addiction. 15, 4, p. 956-966 11 p.

Research output: Contribution to journal › Article

Open Access
File
34 Downloads (Pure)

Ultra-Brief Mindfulness Training Reduces Alcohol Consumption in At-Risk Drinkers: A Randomized Double-Blind Active-Controlled Experiment

Kamboj, S. K., Irez, D., Serfaty, S., Thomas, E., Das, R. K. & Freeman, T. P., 1 Nov 2017, In : International Journal of Neuropsychopharmacology. 20, 11, p. 936-947 12 p.

Research output: Contribution to journal › Article

Open Access
11 Citations (Scopus)

User characteristics and effect profile of Butane Hash Oil: An extremely high-potency cannabis concentrate

Chan, G. C. K., Hall, W., Freeman, T. P., Ferris, J., Kelly, A. B. & Winstock, A., 1 Sep 2017, In : Drug and Alcohol Dependence. 178, p. 32-38 7 p.

Research output: Contribution to journal › Article

Open Access
File
23 Citations (Scopus)
79 Downloads (Pure)
2016

Acute and chronic effects of cannabinoids on effort-related decision-making and reward learning: an evaluation of the cannabis 'amotivational' hypotheses

Lawn, W., Freeman, T. P., Pope, R. A., Joye, A., Harvey, L., Hindocha, C., Mokrysz, C., Moss, A., Wall, M. B., Bloomfield, M. A., Das, R. K., Morgan, C. J., Nutt, D. J. & Curran, H. V., 1 Oct 2016, In : Psychopharmacology. 233, 19-20, p. 3537-3552 16 p.

Research output: Contribution to journal › Article

Open Access
39 Citations (Scopus)

AKT1 genotype moderates the acute psychotomimetic effects of naturalistically smoked cannabis in young cannabis smokers

Morgan, C. J. A., Freeman, T. P., Powell, J. & Curran, H. V., 16 Feb 2016, In : Translational Psychiatry. 6, e738.

Research output: Contribution to journal › Article

Open Access
32 Citations (Scopus)

A Moderate Dose of Alcohol Does Not Influence Experience of Social Ostracism in Hazardous Drinkers

Buckingham, J., Moss, A., Gyure, K., Ralph, N., Hindocha, C., Lawn, W., Curran, H. V. & Freeman, T. P., Apr 2016, In : Frontiers in Psychology. 7, p. 1-7 7 p., 555.

Research output: Contribution to journal › Article

Open Access
2 Citations (Scopus)

Are adolescents more vulnerable to the harmful effects of cannabis than adults? A placebo-controlled study in human males

Mokrysz, C., Freeman, T. P., Korkki, S. & Curran, H. V., 29 Nov 2016, In : Translational Psychiatry. 6, 11, p. 1-10 10 p., e961.

Research output: Contribution to journal › Article

Open Access
28 Citations (Scopus)

Nitrous oxide speeds the reduction of distressing intrusive memories in an experimental model of psychological trauma

Das, R. K., Tamman, A., Nikolova, V., Freeman, T. P., Bisby, J. A., Lazzarino, A. I. & Kamboj, S. K., 30 Jun 2016, In : Psychological Medicine. 46, 8, p. 1749-1759 11 p.

Research output: Contribution to journal › Article

14 Citations (Scopus)

No Smoke without Tobacco: A Global Overview of Cannabis and Tobacco Routes of Administration and Their Association with Intention to Quit

Hindocha, C., Freeman, T. P., Ferris, J. A., Lynskey, M. T. & Winstock, A. R., Jul 2016, In : Frontiers in Psychiatry . 7, 104.

Research output: Contribution to journal › Article

Open Access
44 Citations (Scopus)

Salience attribution and its relationship to cannabis-induced psychotic symptoms

Bloomfield, M. A. P., Mouchlianitis, E., Morgan, C. J. A., Freeman, T. P., Curran, H. V., Roiser, J. P. & Howes, O. D., 1 Dec 2016, In : Psychological Medicine. 46, 16, p. 3383-3395 13 p.

Research output: Contribution to journal › Article

Open Access
5 Citations (Scopus)
2015

A comparison of emotion regulation strategies in response to craving cognitions: Effects on smoking behaviour, craving and affect in dependent smokers

Beadman, M., Das, R. K., Freeman, T. P., Scragg, P., West, R. & Kamboj, S. K., Jun 2015, In : Behaviour Research and Therapy. 69, p. 29-39 11 p.

Research output: Contribution to journal › Article

16 Citations (Scopus)

Acute effects of delta-9-tetrahydrocannabinol, cannabidiol and their combination on facial emotion recognition: a randomised, double-blind, placebo-controlled study in cannabis users

Hindocha, C., Freeman, T. P., Schafer, G., Gardener, C., Das, R. K., Morgan, C. J. A. & Curran, H. V., 1 Mar 2015, In : European Neuropsychopharmacology. 25, 3, p. 325-334 10 p.

Research output: Contribution to journal › Article

Open Access
72 Citations (Scopus)

Assessing the translational feasibility of pharmacological drug memory reconsolidation blockade with memantine in quitting smokers

Das, R. K., Hindocha, C., Freeman, T. P., Lazzarino, A. I., Curran, H. V. & Kamboj, S. K., Sep 2015, In : Psychopharmacology. 232, 18, p. 3363-3374 12 p.

Research output: Contribution to journal › Article

Open Access
21 Citations (Scopus)

Associations between cigarette smoking and cannabis dependence: a longitudinal study of young cannabis users in the United Kingdom

Hindocha, C., Shaban, N. D. C., Freeman, T. P., Das, R. K., Gale, G., Schafer, G., Falconer, C. J., Morgan, C. J. A. & Curran, H. V., 1 Mar 2015, In : Drug and Alcohol Dependence. 148, p. 165-171 7 p.

Research output: Contribution to journal › Article

Open Access
41 Citations (Scopus)

Attentional bias and treatment adherence in substitute-prescribed opiate users

Charles, M., Wellington, C. E., Mokrysz, C., Freeman, T. P., O'Ryan, D. & Curran, H. V., 1 Jul 2015, In : Addictive Behaviors. 46, p. 100-105 6 p.

Research output: Contribution to journal › Article

9 Citations (Scopus)

Dopamine, urges to smoke, and the relative salience of drug versus non-drug reward

Freeman, T. P., Das, R. K., Kamboj, S. K. & Curran, H. V., 1 Jan 2015, In : Social Cognitive and Affective Neuroscience. 10, 1, p. 85-92 8 p.

Research output: Contribution to journal › Article

Open Access
8 Citations (Scopus)

Examining the profile of high-potency cannabis and its association with severity of cannabis dependence

Freeman, T. P. & Winstock, A. R., Nov 2015, In : Psychological Medicine. 45, 15, p. 3181-3189 9 p.

Research output: Contribution to journal › Article

Open Access
99 Citations (Scopus)

New challenges raised by ‘legal highs’

Freeman, T. & Richardson, T., Apr 2015, In : The Psychologist. 28, 4, p. 254 - 261 2 p.

Research output: Contribution to journal › Article

Open Access

Recreational 3,4-methylenedioxy-N-methylamphetamine (MDMA) or 'ecstasy' and self-focused compassion: Preliminary steps in the development of a therapeutic psychopharmacology of contemplative practices

Kamboj, S. K., Kilford, E. J., Minchin, S., Moss, A., Lawn, W., Das, R. K., Falconer, C. J., Gilbert, P., Curran, H. V. & Freeman, T. P., 1 Sep 2015, In : Journal of Psychopharmacology . 29, 9, p. 961-970 10 p.

Research output: Contribution to journal › Article

14 Citations (Scopus)

The effects of nicotine dependence and acute abstinence on the processing of drug and non-drug rewards

Lawn, W., Freeman, T. P., Hindocha, C., Mokrysz, C., Das, R. K., Morgan, C. J. A. & Curran, H. V., 1 Jul 2015, In : Psychopharmacology. 232, 14, p. 2503-2517 15 p.

Research output: Contribution to journal › Article

13 Citations (Scopus)
2014

Emotional processing deficits in chronic cannabis use: a replication and extension

Hindocha, C., Wollenberg, O., Carter Leno, V., Alvarez, B. O., Curran, H. V. & Freeman, T. P., 1 May 2014, In : Journal of Psychopharmacology . 28, 5, p. 466-471 6 p.

Research output: Contribution to journal › Article

20 Citations (Scopus)