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Psychology IA (17-18/22)
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  • Psychology IA
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  • Internationals School Group Of Jubail

Psychology IA on the case study Baddeley and Hitch (1974). The IA was graded as a 6. A quality written essay that you can use as inspiration or guidance when writing a quality Psychology IA for your own grade. Please do not copy any information from the IA as it can lead to plagiarism, which will b...

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  • July 25, 2023
  • 18
  • 2022/2023
  • Essay
  • Unknown
  • A

Subjects

  • psychology
  • psychology ia
  • internal assessment
  • sl psychology ia
  • ib ia
  • ia
  • psychology internal assessment
  • international baccalaureate
  • psychology international baccalaureate
  • international baccalaureate ia

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  • Internationals School group of Jubail
  • Psychology IA
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An Experiment Investigating the Word

Length Effect


[IB candidate code]



[Group IB candidate code]



28th May, 2022



Number of Words: 2191 words

, Table of Contents

Introduction……………………………………………………………………….3

Exploration………………………………………………………………………..5
- Experimental Design……………………………………………………….5
- Sampling Method…………………………………………………………..5
- Controls…………………………………………………………………….6
- Materials……………………………………………………………………6
- Procedure…………………………………………………………………...7
- Ethical Considerations……………………………………………………...8
Analysis……………………………………………………………………………8
Evaluation…………………………………………………………………………10
Bibliography………………………………………………………………………12
Appendix………………………………………………………………………….13
- Appendix I………………………………………………………………….13
- Appendix II…………………………………………………………………14
- Appendix III………………………………………………………………..15
- Appendix IV………………………………………………………………..16
- Appendix V………………………………………………………………...17
- Appendix VI………………………………………………………………..18

, Introduction

The working memory model was developed by Baddeley and Hitch (1974) in order to

present a better alternative to the multi-store model (Kognity). The working memory model has

three components: the phonological loop, visuospatial sketchpad, and the central executive.

Firstly, the visuospatial sketchpad keeps the visual and spatial information active in the mind for

problem-solving. In contrast, the phonological loop keeps auditory information active in the

mind for the purpose of problem-solving. Finally, the central executive is the most important as it

monitors functions and works both the visuospatial sketchpad and the phonological loop (James

Holdnack).

Baddeley et al. (1975) is a study that shows the working memory model had several

experiments testing the working memory. Their aim was to test the phonological loop's

limitations, to see how much verbal information it could handle at one time, to test the influence

of word length on memory span (Kognity). The first experiment started with the researchers

creating four to eight-word lists, half monosyllabic words, and half 5-syllable words. The words

were spoken in sequential order, with a 1.5-second gap between each word. Participants were

then given 15 seconds to remember the sequential order. This was done to show the working

memory capabilities. Baddeley et al. (1975) concluded that shorter words had a better recall than

longer words, and this was due to the word length effect. The word length effect is an

observation that states that short word lists are recalled better than long word lists. Short word

lists are easier to recall because shorter words are rapidly rehearsed in a small duration of time

due to short words having a shorter letter content; thus, shorter words are more maintained.

Conversely, longer words are rehearsed slowly due to the longer letter content, therefore less

held in the same small duration of time (Lucy Henry).

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