Influence on reliability of cognitive processes

Digital technology refers to electronic systems such as computers, smartphones, and the internet that process and store information

the internal mental activities—akin to "software" of the mind—that acquire, process, store, and retrieve information to interpret the environment. Particularly memory accuracy.

the cognitive process of encoding, storing, and retrieving information, acting as an active, reconstructive system rather than a perfect recorder. Digital Tech can negativily effect memory accuracy and consistency

sparrow et al(2011)

whether people rely on the Internet as an external memory store, leading to a reduced need for remembering information directly (this known as the google effect or digital amnesia)

- 60 undergraduate students at U of Harvard (37 f, 23 m)
- Given 40 trivia questions ranging from obscure facts to facts assumed to be well known
- Experiment was a 2 x 2 independent sample design meaning that there were two independent variables manipulated at different levels
- The two independent variables were:
> Participants were told that their information would be saved after pressing space and would be accessed later or, the participants were told that their info would be erased after pressing space to make room for a new answer.
> Participants were split into two groups: those told to remember the information and those who weren't told
- Participants were then given a blank sheet of paper and 10 minutes to recall everything they remembered
- They were then given a recognition task where there were 40 statements where they had to answer yes/no to if they were different from the original 40 trivia facts

Participants who believed their work would be erased remembered significantly more than those who thought it was saved.
Being explicitly asked to remember did not significantly improve recall.
Conclusion: People make less effort to remember information if they believe it is stored externally.

This reduces memory reliability because recall becomes dependent on external storage rather than internal encoding. In real-world terms, this suggests that individuals may experience weaker recall of factual information due to overreliance on digital systems.

The study was influential because it introduced the concept of “digital amnesia,” suggesting that individuals are less likely to retain information when they know it is stored externally. This idea has been supported in real-world observations, such as surveys by Kaspersky Lab showing that many people struggle to recall basic information like phone numbers, which they previously memorised. This increases the practical significance of the findings.

However, attempts to replicate Sparrow et al.’s findings have not always been successful. This raises concerns about the reliability of the results, suggesting that the Google effect may not be as robust or universal as originally proposed.

The study has limited ecological validity because participants were asked to remember artificial, low-interest information in a laboratory setting. In real life, memory is influenced by personal relevance and emotional depth, which were not present in the experimental tasks. Therefore, the findings may not fully reflect how digital technology affects memory in everyday contexts.

There is also the possibility of demand characteristics, as participants may have guessed the aim of the study and adjusted their behaviour accordingly. If participants suspected the researchers were testing memory dependence on technology, this could have influenced their responses and reduced internal validity.

Finally, the sample consisted of university students who are highly familiar with computers and digital tools. This limits population validity, as their cognitive habits may differ from older adults or individuals with less exposure to technology.

While Sparrow et al. (2011) demonstrates how digital storage can reduce individual memory reliability, Hirst et al. (2008) extends this issue by showing that memory can also become distorted through socially shared and media-influenced recall.

to investigate whether there is a correlation between the amount of media coverage and the accuracy of their memories of the event

- correlational study
- looked at two different national tragedies in the US
- 391 participants (who filled out all 3 surverys)
- compared in terms of vividness and accuracy
- "how confident are you that your recollection is accurate?" (1 = low 5 = high)
- "how accurately do you think you will remember 2 years from now?"

- there was a higher level of accuracy in the 9/11 memories
- however, there was also more media coverage of the 9/11 terrorist attacks over the three years following the event
- strong emotional reactions remembered more poorly than factual info such as where or when they learned it
- the content of event memory stabilizes after a year

this demonstrates that memory is not a fixed record of events but is vulnerable to external influences, especially when events are emotionally significant and repeatedly discussed in media.

Testability: high testability as The study uses a structured longitudinal design, allowing researchers to track changes in memory over time and Standardised questioning improves consistency in data collection across participants. However, It is difficult to control all external influences (e.g. media exposure, social discussion), meaning variables affecting memory distortion cannot be fully isolated limiting internal validty and the lack of experimental manipulation limits cause-and-effect conclusions.

unbiase: The study uses a large and diverse sample of individuals who experienced the same real-world event (9/11), which increases population validity and representativeness. This reduces the artificiality often found in student-only samples and increases the ecological realism of the findings, making the results more applicable to real-world memory processes. However, participants were exposed to different levels of media coverage and social discussion, introducing uncontrolled variability that may bias recall. In addition, cultural differences and individual differences in media consumption could have influenced how memories were reconstructed, reducing the overall internal validity of the findings.

Application: High applicability as findings help explain how media coverage can influence eyewitness testimony and public memory of major events and useful in legal and forensic psychology for understanding memory contamination. However, the study its limited in direct application to everyday memory tasks (e.g. learning or routine recall).
Cannot easily be used to predict individual memory accuracy in non-traumatic situations.

Sparrow et al. (2011) shows that digital technology reduces memory reliability by encouraging dependence on external storage systems, while Hirst et al. (2008) demonstrates that memory can also become unreliable through social and media-driven reconstruction. Together both studies show that while memory remains flexible and adaptive, its accuracy is weakened in technologically rich environments where information is constantly externalised and reshaped.