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Related Concept Videos

Serial Position Effect01:03

Serial Position Effect

The serial position effect is a cognitive phenomenon where individuals are more likely to recall the first and last items in a list compared to those in the middle. This effect is divided into the primacy effect and the recency effect. The primacy effect is observed when the initial items in a list are remembered better. This occurs because these items are rehearsed more frequently or receive more elaborative processing, allowing them to be encoded into long-term memory more effectively. For...
Ranks01:02

Ranks

Unlike parametric methods, nonparametric statistics are ideal for nominal and ordinal data, requiring fewer assumptions about the population's nature or distribution. This makes nonparametric methods easier to apply and interpret, as they do not depend on parameters like mean or standard deviation. One common approach in nonparametric analysis is to sort data according to a specific criterion. For instance, we might arrange weather data from hottest to coldest days in a month or rank cities...
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Testing a Claim about Population Proportion01:24

Testing a Claim about Population Proportion

A complete procedure for testing a claim about a population proportion is provided here.
There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...
Friedman Two-way Analysis of Variance by Ranks01:21

Friedman Two-way Analysis of Variance by Ranks

Friedman's Two-Way Analysis of Variance by Ranks is a nonparametric test designed to identify differences across multiple test attempts when traditional assumptions of normality and equal variances do not apply. Unlike conventional ANOVA, which requires normally distributed data with equal variances, Friedman's test is ideal for ordinal or non-normally distributed data, making it particularly useful for analyzing dependent samples, such as matched subjects over time or repeated measures from...

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Related Experiment Video

Updated: Jun 24, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)
19:44

A Tactile Automated Passive-Finger Stimulator (TAPS)

Published on: June 3, 2009

Normalizing serial position analyses: the Proportional Accountability algorithm.

Jon Machtynger1, Tim Shallice

  • 1Institute of Cognitive Neuroscience, University College London, London, UK. j.machtynger@ucl.ac.uk

Cognitive Neuropsychology
|April 7, 2009
PubMed
Summary
This summary is machine-generated.

The Wing & Baddeley method for serial position errors may skew results. Our proposed method offers a more accurate way to analyze memory recall processes.

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Last Updated: Jun 24, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)
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Area of Science:

  • Cognitive Psychology
  • Memory Research
  • Experimental Psychology

Background:

  • The Wing & Baddeley approach is widely used for normalizing serial position errors in memory studies.
  • Concerns exist regarding the accuracy of error allocation in the Wing & Baddeley normalization method.

Purpose of the Study:

  • To compare the established Wing & Baddeley normalization approach with a novel method.
  • To highlight potential biases in existing literature stemming from the Wing & Baddeley method.

Main Methods:

  • Comparative analysis of serial position error normalization techniques.
  • Evaluation of error allocation accuracy in memory recall models.

Main Results:

  • The Wing & Baddeley approach demonstrates inadequate normalization of errors across serial positions.
  • This inadequacy can lead to biased interpretations in published memory research.

Conclusions:

  • A revised approach to normalizing serial position errors is necessary for accurate memory research.
  • Re-evaluation of findings in seminal publications using the Wing & Baddeley method may be warranted.