COVID-19 and Psychotic Symptoms in France

The pandemic of the novel coronavirus disease (COVID-19) has now affected millions of people,
including people in France. There are reports in the media about increased stress, anxiety
and isolation for the entire population. Likewise, there are many concerns regarding people
with mental health issues including people experiencing psychotic symptoms. Thus, studies are
needed to understand better the effects of the COVID-19 pandemic and related government
measures (e.g., self-isolation) on the mental health and specifically on psychotic
experiences. To reach this aim the investigators designed an online survey evaluating
people's perceptions of the COVID-19 pandemic and government measures, their habits during
the isolation period, to what extent they feel lonely, how they are managing their emotions,
their general emotional state and finally the presence of psychotic experiences. Participants
will be invited to complete these measures three times. Participants will complete the survey
again in 1 week and then in 1 month.

The specific goals of this project are:

- Determine the association between psychotic symptoms (paranoia and hallucinations) and
perception of the COVID-19 pandemic and government measures, level of activity,
isolation, emotion regulation, cognitive bias and negative affect at Time 1.

- Determine which factors predict psychotic symptoms one week later and one month later.

- Explore changes across time on these measures.

Methodology:

The entire study will be conducted online. Participants will be assessed at baseline_ T1:
Peak of the COVID-19 pandemic; T2: 1 week after T1; T3: 1 month after T1.

Participants will provide their informed consent. At these assessment moments, they will
complete a set of self-report measures assessing COVID-19 related psychological aspects,
emotion regulation, current levels of activity, cognitive bias, as well as paranoid ideation
and hallucinatory experiences.

- Participants will create their own ID code (so the investigators can then match their data)
and when providing their informed consent to the study they would give us their email
addresses so the investigators could contact them to fill out the measures in the 2nd/3rd
assessment moment

Sample size:

The investigators have not set a minimum/maximum sample size for this study. The study will
remain open until the end of the self-isolation period in France. The investigators hope to
recruit at least 600 participants.

List of self-report measures:

- Behavioral activation for Depression Scale

- The UCLA Loneliness Scale

- The Brief Experiential Avoidance Questionnaire

- Cognitive Emotional Regulation Questionnaire

- items measuring cognitive restructuring and catastrophisation

- Repetitive Thinking Questionnaire

- Cognitive bias questionnaire for Psychosis

- Depression Anxiety and Stress Scale

- Paranoia Scale

- Cardiff Anomalous Perceptions Scale