Katherine A Maclean
Biographic Data
| ID | 4224489 |
|---|---|
| NAME | Katherine A Maclean |
| GIVEN NAMES | Katherine A |
| FAMILY NAME | Maclean |
| SIGNATURE | MACLEAN K A |
| AFFILIATIONS | University of California, Davis |
| VERIFIED | No |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 21 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2010 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 1 |
A Qualitative Exploration of Relational Ethical Challenges and Practices in Psychedelic Healing
As both 3,4-methylenedioxymethamphetamine (MDMA)- and psilocybin-assisted psychedelic psychotherapy near U.S. Food and Drug Administration (FDA) approval and gain acceptance as efficacious clinical approaches, concerns have been raised about the likelihood of sexual violation of a client and other relational boundary transgressions. In the current study, 23 practitioners who have administered MDMA and psilocybin to clients in underground (i.e., e…
Psilocybin-occasioned mystical-type experience in combination with meditation and other spiritual practices produces enduring positive changes in psychological functioning and in trait measures of pro…
Psilocybin can occasion mystical-type experiences with participant-attributed increases in well-being. However, little research has examined enduring changes in traits. This study administered psilocybin to participants who undertook a program of meditation/spiritual practices. Healthy participants were randomized to three groups (25 each): (1) very low-dose (1 mg/70 kg on sessions 1 and 2) with moderate-level (“standard”) support for spiritual-p…
Survey study of challenging experiences after ingesting psilocybin mushrooms
Acute and enduring adverse effects of psilocybin have been reported anecdotally, but have not been well characterized. For this study, 1993 individuals (mean age 30 yrs; 78% male) completed an online survey about their single most psychologically difficult or challenging experience (worst “bad trip”) after consuming psilocybin mushrooms. Thirty-nine percent rated it among the top five most challenging experiences of his/her lifetime. Eleven perce…
Intensive meditation training influences emotional responses to suffering
Meditation practices purportedly help people develop focused and sustained attention, cultivate feelings of compassionate concern for self and others, and strengthen motivation to help others who are in need. We examined the impact of 3 months of intensive meditative training on emotional responses to scenes of human suffering. Sixty participants were assigned randomly to either a 3-month intensive meditation retreat or a wait-list control group.…
A creative and insightful cognitive neuroscience approach for understanding the effects of contemplative training on pleasure and the “gossip of the ego”
In “Meditation-induced bliss viewed as release from conditioned neural (thought) patterns that block reward signals in the brain pleasure center,” Sharp provides an innovative framework for underst
Factor Analysis of the Mystical Experience Questionnaire
A large body of historical evidence describes the use of hallucinogenic compounds, such as psilocybin mushrooms, for religious purposes. But few scientific studies have attempted to measure or characterize hallucinogen-occasioned spiritual experiences. The present study examined the factor structure of the Mystical Experience Questionnaire (MEQ), a self-report measure that has been used to assess the effects of hallucinogens in laboratory studies…
Mystical experiences occasioned by the hallucinogen psilocybin lead to increases in the personality domain of openness
A large body of evidence, including longitudinal analyses of personality change, suggests that core personality traits are predominantly stable after age 30. To our knowledge, no study has demonstrated changes in personality in healthy adults after an experimentally manipulated discrete event. Intriguingly, double-blind controlled studies have shown that the classic hallucinogen psilocybin occasions personally and spiritually significant mystical…
Enhanced response inhibition during intensive meditation training predicts improvements in self-reported adaptive socioemotional functioning
We examined the impact of training-induced improvements in self-regulation, operationalized in terms of response inhibition, on longitudinal changes in self-reported adaptive socioemotional functioning. Data were collected from participants undergoing 3 months of intensive meditation training in an isolated retreat setting (Retreat 1) and a wait-list control group that later underwent identical training (Retreat 2). A 32-min response inhibition t…
Intensive Meditation Training Improves Perceptual Discrimination and Sustained Attention
The ability to focus one’s attention underlies success in many everyday tasks, but voluntary attention cannot be sustained for extended periods of time. In the laboratory, sustained-attention failure is manifest as a decline in perceptual sensitivity with increasing time on task, known as the vigilance decrement. We investigated improvements in sustained attention with training (~5 hr/day for 3 months), which consisted of meditation practice that…
Factor Analysis of the Mystical Experience Questionnaire
A large body of historical evidence describes the use of hallucinogenic compounds, such as psilocybin mushrooms, for religious purposes. But few scientific studies have attempted to measure or characterize hallucinogen-occasioned spiritual experiences. The present study examined the factor structure of the Mystical Experience Questionnaire (MEQ), a self-report measure that has been used to assess the effects of hallucinogens in laboratory studies…
A Qualitative Exploration of Relational Ethical Challenges and Practices in Psychedelic Healing
As both 3,4-methylenedioxymethamphetamine (MDMA)- and psilocybin-assisted psychedelic psychotherapy near U.S. Food and Drug Administration (FDA) approval and gain acceptance as efficacious clinical approaches, concerns have been raised about the likelihood of sexual violation of a client and other relational boundary transgressions. In the current study, 23 practitioners who have administered MDMA and psilocybin to clients in underground (i.e., e…
Intensive Meditation Training Improves Perceptual Discrimination and Sustained Attention
The ability to focus one’s attention underlies success in many everyday tasks, but voluntary attention cannot be sustained for extended periods of time. In the laboratory, sustained-attention failure is manifest as a decline in perceptual sensitivity with increasing time on task, known as the vigilance decrement. We investigated improvements in sustained attention with training (~5 hr/day for 3 months), which consisted of meditation practice that…
Mystical experiences occasioned by the hallucinogen psilocybin lead to increases in the personality domain of openness
A large body of evidence, including longitudinal analyses of personality change, suggests that core personality traits are predominantly stable after age 30. To our knowledge, no study has demonstrated changes in personality in healthy adults after an experimentally manipulated discrete event. Intriguingly, double-blind controlled studies have shown that the classic hallucinogen psilocybin occasions personally and spiritually significant mystical…
Enhanced response inhibition during intensive meditation training predicts improvements in self-reported adaptive socioemotional functioning
We examined the impact of training-induced improvements in self-regulation, operationalized in terms of response inhibition, on longitudinal changes in self-reported adaptive socioemotional functioning. Data were collected from participants undergoing 3 months of intensive meditation training in an isolated retreat setting (Retreat 1) and a wait-list control group that later underwent identical training (Retreat 2). A 32-min response inhibition t…
Factor Analysis of the Mystical Experience Questionnaire
A large body of historical evidence describes the use of hallucinogenic compounds, such as psilocybin mushrooms, for religious purposes. But few scientific studies have attempted to measure or characterize hallucinogen-occasioned spiritual experiences. The present study examined the factor structure of the Mystical Experience Questionnaire (MEQ), a self-report measure that has been used to assess the effects of hallucinogens in laboratory studies…
A creative and insightful cognitive neuroscience approach for understanding the effects of contemplative training on pleasure and the “gossip of the ego”
In “Meditation-induced bliss viewed as release from conditioned neural (thought) patterns that block reward signals in the brain pleasure center,” Sharp provides an innovative framework for underst
Intensive meditation training influences emotional responses to suffering
Meditation practices purportedly help people develop focused and sustained attention, cultivate feelings of compassionate concern for self and others, and strengthen motivation to help others who are in need. We examined the impact of 3 months of intensive meditative training on emotional responses to scenes of human suffering. Sixty participants were assigned randomly to either a 3-month intensive meditation retreat or a wait-list control group.…
Survey study of challenging experiences after ingesting psilocybin mushrooms
Acute and enduring adverse effects of psilocybin have been reported anecdotally, but have not been well characterized. For this study, 1993 individuals (mean age 30 yrs; 78% male) completed an online survey about their single most psychologically difficult or challenging experience (worst “bad trip”) after consuming psilocybin mushrooms. Thirty-nine percent rated it among the top five most challenging experiences of his/her lifetime. Eleven perce…
Psilocybin-occasioned mystical-type experience in combination with meditation and other spiritual practices produces enduring positive changes in psychological functioning and in trait measures of pro…
Psilocybin can occasion mystical-type experiences with participant-attributed increases in well-being. However, little research has examined enduring changes in traits. This study administered psilocybin to participants who undertook a program of meditation/spiritual practices. Healthy participants were randomized to three groups (25 each): (1) very low-dose (1 mg/70 kg on sessions 1 and 2) with moderate-level (“standard”) support for spiritual-p…
A Qualitative Exploration of Relational Ethical Challenges and Practices in Psychedelic Healing
As both 3,4-methylenedioxymethamphetamine (MDMA)- and psilocybin-assisted psychedelic psychotherapy near U.S. Food and Drug Administration (FDA) approval and gain acceptance as efficacious clinical approaches, concerns have been raised about the likelihood of sexual violation of a client and other relational boundary transgressions. In the current study, 23 practitioners who have administered MDMA and psilocybin to clients in underground (i.e., e…
Psychology (9 works) · Social Psychology (7 works) · Clinical Psychology (6 works) · Psychedelics and Drug Studies (6 works) · Hallucinogen (5 works) · Psilocybin (5 works) · Psychiatry (5 works) · Mindfulness and Compassion Interventions (4 works) · Psychotherapist (4 works) · Medicine (3 works)