Think aloud protocols are widely applied in user experience studies. In this paper, the effect of two different applications of the Retrospective Think Aloud (RTA) protocol on the number of user-reported usability issues is examined. To this end, 30 users were asked to use the National Cadastre and Mapping Agency web application and complete a set of tasks, such as measuring the land area of a ...

PURPOSE Internet-based patient portals are increasingly being implemented throughout health care organizations to enhance health and optimize communication between patients and health professionals. The decision to adopt a patient portal requires careful examination of the advantages and disadvantages of implementation. This study aims to investigate 1 proposed advantage of implementation: alle...

BACKGROUND The optimal timing to initiate bevacizumab (BV) therapy for recurrent glioblastoma (GBM) is currently unclear. To address this issue, we examined progression-free survival (PFS) and survival time (ST) in a large retrospective cohort of GBM patients treated with BV at different recurrences. METHODS We identified 468 primary GBM patients who underwent biopsy or surgery followed by ra...

For example, a prolonged gaze to some widget does not necessarily mean that the user does not understand the meaning of the widget. The user may just be pondering some aspect of the given task unrelated to the role of the widget on which the gaze happens to dwell. Similarly, a distinctive area on a heat map is often interpreted as meaning that the area was interesting. It attracted the user’s a...

This paper describes a comparative study of three usability test approaches: concurrent thinkaloud protocols, retrospective think-aloud protocols, and constructive interaction. These three methods were compared by means of an evaluation of an online library catalogue, which involved four points of comparison: number and type of usability problems detected; relevance of the problems detected; ov...

A retrospective study of breastfeeding patterns in a socioeconomically homogeneous sample of 2520 mothers visiting Mexican outpatient clinics was conducted. During May and June 1975, mothers attending the outpatient departments of 4 clinics of the Mexican Social Security Institute (IMSS) were interviewed. The mothers ranged in age from 15 to 48 years. In 56.1% of the cases, the child's fathe...

Think-aloud protocols are a dominant method in usability testing. There is, however, only little empirical evidence on the actual validity of the method. This paper describes an experiment that compares concurrent and retrospective think-aloud protocols for a usability test of an online library catalogue. There were three points of comparison: usability problems detected, overall task performan...

Two studies examined the use of Think Aloud (TA) protocol as a means for collecting data of cognitive processes during performance in golf. In Study 1, TA was employed to examine if different verbalisation (Level 2 or Level 3 TA) instructions influence performance of high and low skilled golfers. Participants performed 30 putts using TA at either Levels 2, 3, or no verbalization condition. Alth...

OBJECTIVE To identify factors reducing compliance at diagnosis, treatment, and review stages among women referred with abnormal cervical smears to a hospital colposcopy clinic. DESIGN Retrospective analysis of sociodemographic data from hospital notes of the attenders and defaulters during one year (1989-90) and prospective collection of information by structured interviews of a sample of def...

BACKGROUND Effectiveness of a drug is a key concept dependent on efficacy, safety, and tolerability. Time to discontinuation of treatment is also representative of effectiveness. We investigated differences in treatment discontinuation among newly started second-generation antipsychotics in the clinical setting. METHODS Using a retrospective cohort study design, we screened all outpatients (n...