---
title: Psychological Context Effects
nct_id: NCT03855254
overall_status: COMPLETED
phase: NA
sponsor: Swansea University
study_type: INTERVENTIONAL
primary_condition: Positive Communication (Primary)
countries: United Kingdom
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT03855254.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT03855254"
ct_last_update_post_date: 2019-02-26
last_seen_at: "2026-05-12T06:21:10.085Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Psychological Context Effects

**Official Title:** Psychological Context Effects of Participant Expectation on Pain Pressure Thresholds Following Cervicothoracic HVLA Thrust Manipulation: A Double Blind, Crossover, Randomised Controlled Trial

**NCT ID:** [NCT03855254](https://clinicaltrials.gov/study/NCT03855254)

## Key Facts

- **Status:** COMPLETED
- **Phase:** NA
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 35
- **Lead Sponsor:** Swansea University
- **Conditions:** Positive Communication (Primary), Negative Communication, Control Condition
- **Start Date:** 2018-09-01
- **Completion Date:** 2019-01-10
- **CT.gov Last Update:** 2019-02-26

## Brief Summary

This study explores how contextual effects in the fore of positive and negative communication can affect the effect of an osteopathic technique on pain pressure thresholds.

## Eligibility

- **Minimum age:** 18 Years
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
Inclusion Criteria:

* Health volunteers with no forms of existing pain.

Exclusion Criteria:

* Participants with existing pain.
```

## Arms

- **Positive communication** (EXPERIMENTAL)
- **Control (neutral communication)** (NO_INTERVENTION)
- **Negative communication** (EXPERIMENTAL)

## Interventions

- **communication type** (BEHAVIORAL) — Positive and negative communication types are the way that the practitioner communicates to the participant about the potential effectiveness of the osteopathic treatment. The control is a neutral communication condition.

## Primary Outcomes

- **Pain pressure threshold** _(time frame: 6 months)_ — This is the degree to which the participant can tolerate pressure induced through an algometer.

## Locations (1)

- Swansea University, Swansea, Wales, United Kingdom

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.swansea university|swansea|wales|united kingdom` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT03855254.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT03855254*  
*This page is a raw mirror with no AI summary, no editorial enrichment, and no Parkinson's-specific filtering.*