So-Won Han

This study shows the diagnostic contribution of ultrasonography-guided CNB as an alternative to repeat ultrasonography-guided FNA or surgery.

The present study demonstrates that levels of extraversion and neuroticism can predict attentional performance during a change detection task. After completing a change detection task built on the flicker paradigm, participants were assessed for personality traits using the Revised Eysenck Personality Questionnaire (EPQ-R). Multiple regression analyses revealed that higher levels of extraversion predict increased change detection accuracies, while higher levels of neuroticism predict decreased c

The social support provided by chatbots is typically designed to mimic the way humans support others. However, individuals have more conflicting attitudes toward chatbots providing emotional support (e.g., empathy and encouragement) compared to informational support (e.g., useful information and advice). This difference may be related to whether individuals associate a certain type of support with the realm of the human mind and whether they attribute human-like minds to chatbots. In the present

A method for deriving error estimates for adaptive mesh refinement is presented. It is based on the interelement boundary conditions, namely, the continuity of the normal components of the flux density and the tangential components of the magnetic field intensity. The elements that violate the conditions significantly are considered to have large local errors and are refined. Applications to magnetostatic problems involving Laplace's equation with Dirichlet and Neumann boundary conditions in two

Using a task switching paradigm, we investigated age effects on switch costs as a function of the number of sets to be switched. In Experiment 1, younger and older subjects determined a color or shape of an object presented on the computer screen, responding either by moving the joystick or by pressing a button on the joystick. The switch costs were assessed with differences between switch trials (task-set switch, response-set switch, and double switch) and non-switch trials. Contrary to the pre

In the present research we investigated how action influences affective evaluation. In three experiments, participants conducted a sequence of go/no-go tasks, then evaluated the pleasantness of a novel shape. The results of Experiments 1 and 2 show that participants evaluated the shapes that appeared in the go trials more positively than the shapes that appeared in the no-go trials. In Experiment 3, the go/no-go task was conducted without the to-be-evaluated shapes present in the display. The re

In the present study, we examined age-related differences in utilizing learned associations to guide visual search. Participants viewed an object cue that was associated with 1 or 2 target colors, followed by a search array. Older adults showed slower RTs, larger visual search slopes, and reduced cue-target association knowledge than did younger adults. We also found increased search RTs and higher error rates when the cue was associated with 2 colors instead of 1. However, visual search slopes

In the current study, we explored observers' use of two distinct analyses for determining their direction of motion, or heading: a scene-based analysis and a motion-based analysis. In two experiments, subjects viewed sequentially presented, paired digitized images of real-world scenes and judged the direction of heading; the pairs were presented with various interstimulus intervals (ISIs). In Experiment 1, subjects could determine heading when the two frames were separated with a 1,000-ms ISI, l

Abstract Head movements can provide a significant amount of information in communication. This study investigated the social capabilities of a robot’s head interaction, including the direction, movement, and timing of the movement. Using a newly designed robot, which has a minimal head movement mechanism in the three axes of x (pitch), y (roll), and z (yaw), we explored the participants’ perception of the robot’s head movements (i.e., nodding, shaking, and tilting) and movement timing (i.e., hea

Loneliness level was shown to vary by age and gender. Considering the recent COVID-19 outbreak had more impact on the susceptible groups’ mental health, this study scrutinized the joint influence of age and gender on loneliness during the COVID-19 pandemic in South Korea. We utilized large, government-funded public data that contains self-reported measures and emotion diaries collected from October 2020 to March 2021 (N=4,017, age 20-79, 76% female). Hierarchical regression, t-test, and analysis