Chat with us, powered by LiveChat Running Head: DB#3 1.Please define scientific reliability and validity. - Writeedu

Running Head: DB#3 1.Please define scientific reliability and validity.

Running Head: DB#3

1.Please define scientific reliability and validity.

Scientific reliability and validity are crucial in the determination of whether a measurement is proven to work and if it is consistent across time. Validity helps make meaning out of test scores and research so we know who the finding can be applied to (Branson, 2014).  For example, we would not use the same exact therapy for depression of a child as we would on depression for an elderly person.  Studies and research are conducted so we as therapists can scientifically be sure that certain techniques and theories can benefit our clients.  The reliability factor shows consistency across time and is supposed to give us proof that certain methods work for certain mental problems (Branson, 2014). As the DSM has proven, although some measurements cannot be scientifically proven, it does notstop things from being published (American Psychiatric Association, 2013).  It is our responsibility to do our research rather than taking everything at face value. 

2.Discuss whether in your opinion some conceptual construct or an evaluation tool (a measure, an instrument, a scale) can be unreliable but still be considered valid? Whether your answer is yes or no provide your argument and offer the references for it.

In my opinion, if a measurement or scale is proven unreliable after retests have been given, then we should evaluate the exterior factors contributing to the low reliability (Hagen, 2007).  As Branson (2014) states, when multiple observers come up with consistent results after viewing the same factors, this would be considered valid regardless of the reliability (Branson, 2014).

3.After reviewing the Beck and Hamilton Depression Scale Podcasts and accompanying readings, select the one that you believe is the better scale, and offer your reasons for why.

If you are a believer of the DSM-IV (V), regardless of its scientific reliability and validity, then the Beck Depression Scale would be the better scale.  The strengths of this depression scale are generally reliable with a coefficient alpha between 0.90 and 0.93 on average.  However, referring to the validity of the DSM as comparison is not very comforting in my opinion.  This test has a gender bias, cultural bias, and the questions all have equal amount in weight when scored.  It also focuses totally on negative symptoms and does not take into external factors which could lead to a client’s depression (Hagen, 2007).  The Hamilton Depression Rating Scale does not follow the official DSM diagnostic criteria and shows differences in anxiety and depression, so I tend to lean more towards agreeing with this rating scale.  However, the internal reliability has a wide range from 0.46 to 0.97 but the interrater reliability has a range from 0.82 to 0.98 which is incredibly good (Bagby, et al., 2004).  In conclusion, I believe either scale would work but they both need updating and revisions.

Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteEdu. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.

Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.

Do you need an answer to this or any other questions?

Do you need help with this question?

Get assignment help from WriteEdu.com Paper Writing Website and forget about your problems.

WriteEdu provides custom & cheap essay writing 100% original, plagiarism free essays, assignments & dissertations.

With an exceptional team of professional academic experts in a wide range of subjects, we can guarantee you an unrivaled quality of custom-written papers.

Chat with us today! We are always waiting to answer all your questions.

Click here to Place your Order Now