(Solved) t-test project: psy3020 | Homework Solution

t-test project: psy3020

Research Study Overview

The goal of this research study is determine if CBT (cognitive behavior therapy) is effective in treating with people with depression.

Purpose

The purpose of this study is to show that 6 CBT treatments over a 12 week time period can reduce the symptoms of depression in adults with physician diagnosed clinical depression.

For this study, researchers had a participant pool included 112 people who self-selected to be involved in a study for the treatment of depression. No compensation was provided to participants. All measures and treatment were free to all participants. To be considered for the study, participants must meet the inclusion criteria:

• Participants were suffering from physician diagnosed (e.g. DSM-IV, ICD-9) clinical
• If participants were receiving pharmacological treatment for their depression, they had to be on pharmacological treatment for at least 4 weeks prior to
• Participants had to have current episodes of depression lasting at least 6
• Participants could not be currently involved in another psychological

A sample of 40 participants (22 females, and 18 males) was randomly selected from the pool for this study. The age of the participants range from 22 – 39 years with an average of 30 years old. t-test project Participants reported current episodes of depression lasting a mean of 17.47 months (SD ¼ 28:75).

One month prior to CBT treatment, each participant was given a measure of depression. One month after CBT treatment, the depression measure was t-test project re-administered to all participants.

The depression measure is scaled from 1– 20 with higher scores indicating more depression. Scores from 1-7 are considered low depression, scores from 8 – 14 are considered moderate depression, and scores 15 and above are considered severe depression.

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Descriptive Statistics

The Descriptives below give us an overview of the data. The Descriptive Statistics table displays the means, standard deviations, and other statistics of the depression ratings before the CBT treatment (Pre) began, and after treatment (Post). t-test project Use the descriptive statistics and the histograms to describe the pre and post results.