Hofford, R. ., Darna, M. ., Wilmouth, C. ., Dwoskin, L. ., & Bardo, M. . (2014). Environmental enrichment reduces methamphetamine cue-induced reinstatement but does not alter methamphetamine reward or VMAT2 function. Behavioural Brain Research, 270, 151-8. https://doi.org/10.1016/j.bbr.2014.05.007 (Original work published 2014)

Hofford, R. ., Prendergast, M. ., & Bardo, M. . (2015). Pharmacological manipulation of glucocorticoid receptors differentially affects cocaine self-administration in environmentally enriched and isolated rats. Behavioural Brain Research, 283, 196-202. https://doi.org/10.1016/j.bbr.2015.01.049 (Original work published 2015)

Weiss, V. ., Hofford, R. ., , Jennings, F. ., & Bardo, M. . (2015). Sex differences in monoamines following amphetamine and social reward in adolescent rats. Experimental and Clinical Psychopharmacology, 23(4), 197-205. https://doi.org/10.1037/pha0000026

Hofford, R. ., Beckmann, J. ., & Bardo, M. . (2016). Rearing environment differentially modulates cocaine self-administration after opioid pretreatment: A behavioral economic analysis. Drug and Alcohol Dependence, 167, 89-94. https://doi.org/10.1016/j.drugalcdep.2016.07.026 (Original work published 2016)

Hofford, R. ., Chow, J. ., Beckmann, J. ., & Bardo, M. . (2017). Effects of environmental enrichment on self-administration of the short-acting opioid remifentanil in male rats. Psychopharmacology, 234(23-24), 3499-3506. https://doi.org/10.1007/s00213-017-4734-2

Hofford, R. ., Prendergast, M. ., & Bardo, M. . (2018). Modified single prolonged stress reduces cocaine self-administration during acquisition regardless of rearing environment. Behavioural Brain Research, 338, 143-152. https://doi.org/10.1016/j.bbr.2017.10.023 (Original work published 2018)

Hammerslag, L. ., Hofford, R. ., Kang, Q. ., Kryscio, R. ., Beckmann, J. ., & Bardo, M. . (2020). Changes in fentanyl demand following naltrexone, morphine, and buprenorphine in male rats. Drug and Alcohol Dependence, 207, 107804. https://doi.org/10.1016/j.drugalcdep.2019.107804 (Original work published 2020)

Hofford, R. ., Bond, P. ., Chow, J. ., & Bardo, M. . (2020). Presence of a social peer enhances acquisition of remifentanil self-administration in male rats. Drug and Alcohol Dependence, 213, 108125. https://doi.org/10.1016/j.drugalcdep.2020.108125 (Original work published 2020)

Nicolas, C. ., Hofford, R. ., Dugast, E. ., , Belujon, P. ., Solinas, M. ., … Thiriet, N. . (2022). Prevention of relapse to methamphetamine self-administration by environmental enrichment: involvement of glucocorticoid receptors. Psychopharmacology, 239(4), 1009-1018. https://doi.org/10.1007/s00213-021-05770-6