Psychometric Theory

Hundleby, John D.; Nunnally, Jum C.

doi:10.2307/1161962

Cited by 132 publications

(102 citation statements)

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“…Cronbach's alpha and the corrected item-total correlation (CITC) were employed to examine the internal consistency of the questionnaire. An alpha of 0.65-0.70 is considered minimally acceptable for research, an alpha of 0.70-0.80 is considered respectable, and an alpha of 0.80-0.90 is considered good [21]. Items with a CITC value < 0.3 should be deleted from a questionnaire [22].…”

Section: Discussionmentioning

confidence: 99%

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Knowledge of and attitudes towards erosive tooth wear among students of two Chinese universities

et al. 2020

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Background: To assess the knowledge of and attitudes towards erosive tooth wear among dental, medical, and non-medical university students of two Chinese universities. Methods: A questionnaire containing 15 questions on knowledge of erosive tooth wear and 10 questions on attitudes towards erosive tooth wear was designed, and its psychometric properties (reliability and validity) were analysed in a pilot study (n = 120 students). The following 3 groups of university students (n = 635) were recruited based on a convenience sampling technique and were distributed the questionnaire via an online survey system: dental students (DSs), medical students (MSs), and non-medical students (NSs). Differences in the scores between groups and genders were analysed by one-way analysis of variance (ANOVA). The Pearson correlation coefficient was used to determine the association between the knowledge and attitude scores (P < 0.05). Results: The questionnaire was found to be reliable, valid and reproducible. A total of 435 students participated in this study (response rate: 69.6%). The knowledge score of the DSs (11.5 ± 3.4) was significantly higher than those of the NSs (5.5 ± 4.0) and MSs (6.1 ± 4.0) (P < 0.001). The attitude score of the DSs (45.2 ± 6.5) was significantly higher than those of the NSs (41.1 ± 6.9) and MSs (41.8 ± 6.4) (P < 0.001). The majority of DSs expressed attitudes that were more accurate and positive than those expressed by the other 2 groups. The attitude score was positively correlated with the knowledge score (r = 0.237, P < 0.001). Conclusions: Dental students had more accurate knowledge of and more positive attitudes towards erosive tooth wear than medical and non-medical students. In this population, a positive correlation was established between knowledge of and attitudes towards erosive tooth wear.

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Section: Discussionmentioning

confidence: 99%

“…Bartlett's test of sphericity was used to assess the relationship among variables, and the Kaiser-Meyer-Olkin (KMO) measure of sampling accuracy was used to assess the factorability of the correlation matrix. Scree plots were used to corroborate decisions regarding factor extraction [21].…”

Section: Discussionmentioning

confidence: 99%

Knowledge of and attitudes towards erosive tooth wear among students of two Chinese universities

et al. 2020

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“…The few factors with a smaller-than-0.5 load (Table 2) were deleted to enhance the validity. Due to the lack of repeated measurements, the data validity was measured by Cronbach's α, Cronbach's alpha coefficients for the final scales were calculated to ensure the reliability values exceeded the threshold of 0.7 [67]. Table 4 lists the results of reliability tests on the proposed scales.…”

Section: Scalesmentioning

confidence: 99%

Empirical Analysis on the Relationship Between Institutional Pressure, Environmental Strategy and Corporate Environmental Performance

Li¹,

Shu²

2020

IJSDP

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This paper attempts to disclose the driving effect of institutional pressure on corporate environmental performance in the context of China. Firstly, the institutional pressure was divided into three dimensions: coercive pressure, normative pressure and mimetic pressure. Then, the authors established an analytical model of "institutional pressure-environmental strategy-environmental performance", and verified the model with the structural equation. The results show that corporate environmental performance is positively affected by coercive pressure and mimetic pressure, but not directly influenced by normative pressure; the three dimensions of institutional pressure all promote the environmental strategy; environmental strategy mediates the relationships between each dimension and environment performance. Further discussion and cause analysis were performed in the light of China's institutional environment. Finally, the authors summed up the theoretical contributions of this research and looked forward to the future research.

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“…78 respondents were invited to fill out the questionnaire online via social software. We initially assessed the reliability, composite reliability and discriminant validity of the measures and determined that all constructs had an acceptable level (λ ≥ 0.7, α ≥ 0.7, AVE ≥ 0.5, CR ≥ 0.6) [77,78], as shown in Tables A1 and A2. From this analysis, it was determined that no items would be eliminated or modified based on the pretest to the main study.…”

Section: Data Collectionmentioning

confidence: 99%

A Sustainable Innovation—Additional Services for Products Based on Personalised Customer Value

Jiang

Feng

2019

Sustainability

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As a sustainable innovation, offering additional services for products (ASP) is rapidly emerging as an increasingly important consideration for manufactories. Although additional services can increase enhance product utility, there is no guarantee that they will be accepted by customers. This may lead to a waste of product and service resources. Customer acceptance is a prerequisite for sustainability. However, existing service evaluation methods do not support the evaluation of customer acceptance of ASP prior to implementation. We confirmed that customer value can be used to evaluate customer acceptance of ASP based on the conclusion that this factor plays a decisive role in customer acceptance and customer value can be used to evaluate products and services. Then we establish an evaluation model to measure the difference in customer value between products with and without ASP. Utility, input, and supply–demand coefficient were used to quantitatively describe the personalised customer value of customer segments. This approach supports manufacturers in the process of estimating customer acceptance of ASP prior to the allocation of service resources to the implementation of procedure. Using this model, manufactories can provide the most acceptable ASP for different customer groups with less service resources. Finally, the feasibility and effectiveness of the proposed method to measure customer acceptance were established based on the measurement of customer value of the ASP in the case of portable fire extinguishers.

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Psychometric Theory

Cited by 132 publications

References 0 publications

Knowledge of and attitudes towards erosive tooth wear among students of two Chinese universities

Knowledge of and attitudes towards erosive tooth wear among students of two Chinese universities

Empirical Analysis on the Relationship Between Institutional Pressure, Environmental Strategy and Corporate Environmental Performance

A Sustainable Innovation—Additional Services for Products Based on Personalised Customer Value

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