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Researchers in the field of HRM and Strategic HRM have for several decades engaged in research endeavours to identify the link between HR investments and firm performance. Despite this, the field still has some way to go to definitively demonstrate this causal relationship; partly due to the cross-sectional nature of much of this research. In the current paper, we give a brief overview of the SHRM field and the benefits that the new subfield of People Analytics (PA) might bring to the area. We also conduct a brief survey of research in Insider Econometrics, an approach used in Personnel Economics to produce empirical estimates of the value of HR practices, to highlight longitudinal intra-firm research in economics that could provide insights to research exploring the HR investment-performance link (important in both SHRM and PA fields). We discuss the value of combining the business impact perspective of People Analytics that has a unique 'inside' (intra-firm) position, with the longitudinal intra-firm analysis approaches utilized in Insider Econometrics. We suggest that People Analytics researchers, who are able to draw on the theoretical developments in HRM field, would benefit from exploring existing research insights and methodological techniques used within the field of Insider Econometrics. [ABSTRACT FROM AUTHOR]

Objective: To investigate the potential impact of polymorphism in the 3'-untranslated region (3'UTR) of the SLC6A3 gene (DAT1) on normal variation in dopamine transporter (DAT) imaging with [18F]FE-PE2I PET and [123I]FP-Cit SPECT., Methods: Thirty-six individuals (mean age 70.4±5.4 years) with normal [18F]FE-PE2I PET and [123I]FP-Cit SPECT were genotyped for variable number of tandem repeats (VNTR) in the 3'UTR of the DAT1 gene. The DAT-availability in the caudate and putamen as measured with [18F]FE-PE2I PET and [123I]FP-Cit SPECT, as well as in the substantia nigra with [18F]FE-PE2I PET were compared between the participants carrying one or two 9-repeat alleles (i.e. 9R+10R or 9R+9R; 47%) and the participants without a 9R allele (i.e. 10R+10R or 10R+11R; 53%). Nonparametric tests, linear regression analysis and mixed model analysis were used to assess any statistical difference in measured DAT availability between the two allele groups., Results: The measured DAT-availability in PET- and SPECT-imaging tended to be slightly higher in the 9R-group; however, the difference did not reach statistical significance in either the caudate or the putamen or the substantia nigra. Instead, age did have a significant effect on the DAT level (P < 0.05) notwithstanding the genotype., Conclusion: No significant effect of DAT1-genotype was detectable in imaging with [18F]FE-PE2I PET or [123I]FP-Cit, instead, age accounted for the normal variation in DAT-PET and DAT-SPECT., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)