ALSPAC - Age 24 - Source Monitoring Task
The Avon Longitudinal Study of Parents and Children (ALSPAC) assessed their cohort members (CMs) during the study’s age 24 sweep (Focus at 24) using a measure of Source Monitoring Task.
Details on this measure and the data collected from the CMs are outlined in the table below.
| Year of data collection: | 2015-2017 |
| Domain: | Verbal (memory) |
| Measures: | Attribution errors |
| CHC: | Glr (Long-term storage & retrieval) |
| CLOSER Source: | Explore this sweep in CLOSER Discovery: ALSPAC Early Adulthood (19 years – 30 years 11 months) (opens in a new tab) |
| Administration method: | Clinical setting; trained interviewer. |
| Procedure: | During the first source monitoring session, participants were shown a list of cards with categories on (e.g. musical instruments), after which the fieldworker verbally gave the participant an example of this category (e.g. a guitar) and showed them an image of the same category (e.g. an image of a piano). Participants were then asked to provide a third example of this category, different from the two provided by the fieldworker, which was noted by the fieldworker. |
| During the second source monitoring session the fieldworker read out a list of items to the participant, some of which were provided earlier (either by the fieldworker or by the participant), while others were not. For each item, participants were asked whether that item was mentioned in the first session, and if so, whether the response was given verbally by the fieldworker, given in an image by the fieldworker, or said by the participant. | |
| Link to questionnaire: | http://www.bristol.ac.uk/alspac/researchers/our-data/clinical-measures/ (opens in a new tab) |
| Scoring: | Number of old items correctly reported as old, new items correctly reported as new, new items incorrectly reported as old, and old items incorrectly reported as new. |
| Item-level variable(s): | FKSO1011 – FKSO1106 |
| Total score/derived variable(s): | FKSO1001 (number of items correctly remembered as old) |
| FKSO1002 (number of items correctly remembered as said by self) | |
| FKSO1003 (number of items incorrectly remembered as old) | |
| FKSO1004 (number of items incorrectly remembered as said by self) | |
| Descriptives: | N = 3,678 |
| Age of participants (months): | Mean = 293.81 months, SD = 9.779, Range = 268.5 – 318.5 |
| Other sweep and/or cohort: | None |
| Source: | Brébion, G., Amador, X., David, A., Malaspina, D., Sharif, Z., & Gorman, J. M. (2000). Positive symptomatology and source-monitoring failure in schizophrenia—an analysis of symptom-specific effects. Psychiatry research, 95(2), 119-131. |
| Technical resources: | None |
| Example articles: | Unknown |
For the named items in the table above, links are provided to their corresponding content on CLOSER Discovery. Where a variable range is provided, full variable lists can be accessed through the ‘Variable Groups’ tab on the linked CLOSER Discovery page.