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About the experiment::

About the experiment: The purpose of this research is to explore the capacity and how much the mind can remember or recognize after a short period of time. It included 5 different type of stimuli, which were numbers , letters that sound different , letters that sound the same , short words and long words .


Variables: Independent Variables: Type of Stimulus - it included either a word, or a series of digits. Length of Stimulus - either long or short. Dependent Variable: Accuracy of the memory span

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In order to manipulate the independent variables there were four conditions in the experiment corresponding to the two levels of the two independent variables. Condition Type Length 1 Word Short (3-4 letters) 2 Word Long (7-8 letters 3 Digit Short (2 digits) 4 Digit Long (4 digits)


Procedure: In order to develop this experiment a list of words was created. The final list was comprised of 100 short words made up of 3-4 letters and 100 long words made up of 7-8 letters that were familiar to participants. The computer randomized the order of the four conditions for the participants in which to complete them. Each trial consisted of 10 words or digit series and there were 5 trials within each condition for each stimulus and response from the participant.

Statistical Treatment and Results::

Statistical Treatment and Results: The results were compiled into an SPSS program. A two way between subjects ANOVA test was conducted to analyze the data collected. There was a significant main effect of length in recognition such that participants recognized short stimuli with more accuracy than long stimuli. There was also a significant main effect of type of stimuli on recognition such that words were recognized with more accuracy than digits.

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These main effects were qualified by a significant interaction between length and stimulus type. This interaction showed that the effect of length depended on whether the stimulus was words or digits. From these significant results a t-test was conducted to find the means of the variables . The t-test results suggest that as the words became longer the accuracy increased , but as the digits became longer the accuracy decreased.


Conclusions: Participants were expected to recognize more short words than long words, but instead had more accuracy recognizing more long words than short words . Few reasons: They were all college students who are required to do a lot reading for their classes. Reading becomes an automatic process the more it is performed. As the participants were presented with the stimuli in the word conditions, both short and long, they may have found it easier to recognize the stimuli later, because it was automatic to read those words in the first place.

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Familiarity to the words may have also allowed the participants to chunk the information easily. In this way, information about these words or associations with these words was possibly already existing to the long term memory of the participants. The participants reported the mnemonics were easily used for the longer words than the shorter words. The results of this research, however, still do not specifically answer the questions about the capacity of short term memory and if 7 is really the magic number.

The end…:

The end… Presented by: Kirk Patrick Gunio Ruth Guhiting Aila Mae Figeuroa Bles Regeenah Gurvarra Arvin Magpayo

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