Loneliness is a significant problem for young people and is associated with a range of
physical and mental health difficulties. Meta-analyses have identified that interventions
aimed at young people who report loneliness as their primary problem are lacking within the
literature. In adults, the most effective interventions for loneliness are those which target
the underlying maladaptive social cognitions. Therefore, the investigators have developed a
modular Cognitive Behavioural Therapy (CBT) intervention for children and young people aiming
to reduce their feelings of loneliness. The aim of this study is to conduct a multiple
baseline single-case experimental design (SCED) to assess the efficacy, feasibility and
acceptability of this intervention. In total 6-8 11-18-year-olds and their families will be
recruited. The design consists of AB+ post-intervention, where A is the baseline phase, B is
the intervention phase and then a post-intervention phase. Participants will complete a
baseline assessment, before being randomised to one of four different baseline lengths (12
days, 19 days, 26 days or 33 days). Participants will then complete an average of 12 sessions
of CBT, with the aim being to reduce their feelings of loneliness over 12 weeks. Participants
will then complete a 12-day post-intervention phase. Participant loneliness will be
repeatedly assessed throughout the three phases of the intervention using the Three-item
Loneliness Scale, which will be the primary outcome. Secondary outcomes will be reliable and
clinically meaningful change on the UCLA-LS-3, RCADS and SDQ. Feasibility and participant
satisfaction will also be assessed and reported.
Description
The efficacy of CBT for loneliness in children and young people will be evaluated through a
randomised multiple-baseline single case experimental design. The design consists of AB+
post-intervention, where A is the baseline phase, B is the intervention phase and then a
post-intervention phase. In the SCED approach participants are repeatedly assessed on at
least one independent variable, in this case self-reported loneliness on the Three-item
Loneliness Scale, across each phase of the intervention. This repeated measurement and within
subject replication is then used to test the effects of the intervention for individual
participants.
The construction of this SCED trial and the reporting of the results will be in accordance
with the Single-Case Reporting Guidelines in Behavioural Intervention (SCRIBE).
Participants will be recruited via advertisements emailed to schools, shared via social media
and word of mouth. After consenting, participants and their parents/carers will complete a
baseline eligibility assessment. Participants will complete a range of online questionnaires
via a secure online platform. Participants will then attend a remote research assessment
appointment to determine whether the family meet the eligibility criteria. The researcher
completing the baseline and post-intervention assessments will not be involved in the
clinical intervention and will be blinded to baseline allocation. After all baseline
assessments for the participant group are completed, participants will be discussed within
supervision to confirm that the participants meet eligibility criteria. Eligible participants
will then be randomised using a random number generator to one of four different baseline
lengths (12 days, 19 days, 26 days or 33 days). The decision to have a minimum of 12
observations per phase meets the requirements for guidelines and standards and will allow for
sufficient power for Tau-U analysis.
Each of the participating families will then be contacted to inform them of their allocation.
Randomisation and contacting of the families will be completed by a third researcher, who is
not involved in either the clinical intervention or research assessments. A letter will also
be sent to the participants General Practitioner (GP) informing them of the family's
participation in the research study. The setting for the entire study will be remote, with
both assessments and intervention sessions being conducted remotely a secure video platform.
All participants in the group will begin their baseline phase concurrently. During the
baseline phase participants will be asked to complete the Three-Item Loneliness Scale each
day via a secure online platform. SMS message reminders will also be sent to the participants
and their parent/carers each day.
The baselines phase will be immediately followed by the intervention. Each family will
receive (on average) 12 sessions of CBT for loneliness in children and young people. The
first 4 sessions will take place bi-weekly, the second 4 sessions weekly and the final 4
sessions fortnightly.
For all participants the first two sessions will be focussed on assessment and then
formulation. The final session for all participants will focus on relapse prevention. During
the assessment session the participant will be asked to define 3 goal-based outcomes for how
participants hope the intervention will reduce their loneliness, which will then guide the
treatment process. During the intervention phase the participants will complete routine
outcome measures (ROMs) for each session. This will include the Three-Item Loneliness Scale,
visual analogue scales (VAS) of mood, anxiety and loneliness and ratings of their goal-based
outcomes. The ROMs will be completed via a secure online platform before each session. If
participants have not completed the ROMs before their appointment, then participants will be
completed with the clinician at the start of the session.
Participants will begin the post-intervention phase immediately after the final session of
their intervention. During the post-intervention phase participants will be asked to complete
the primary outcome measure, Three-Item Loneliness Scale each day for 12 days. Participants
will then complete their post-intervention assessment with the second researcher. Before the
assessment participants will be asked to re-complete the baseline questionnaires in addition
to the parent and child-report versions of the Experience of Service Questionnaire and a
questionnaire asking whether COVID-19 or any other events have affected their loneliness
during the intervention period. A letter will be sent to the participants General
Practitioner (GP) informing them of their participation in the research study has finished.