Prevailing Arguments and Types of Conclusions of Parent\u2013Child Argumentation

This chapter examines the types of arguments used most often by parents and children and the different types of conclusions of their argumentative discussions. The conceptual tool adopted for the analysis is based on the integration of the pragma-dialectical ideal model of a critical discussion (van Eemeren & Grootendorst, 2004) with the Argumentum Model of Topics (Rigotti & Greco Morasso, 2019). The integration of these two tools of analysis permits to reconstruct the inferential configuration of the arguments used by parents and children and to identify the types of conclusions of their argumentative discussions. Exemplary argumentative sequences that bring to light the results obtained through the qualitative analysis of a larger corpus of argumentative discussions between parents and children are presented and discussed

The Response of Electron Pitch Angle Distributions to the Upper Limit on Stably Trapped Particles

We use Van Allen Probes electron data during 70 geomagnetic storms to examine the response of equatorial pitch angle distributions (PADs) at L* = 4.0–4.5 to a theoretical upper limit on stably trapped particle fluxes. Of the energies examined, 54 and 108 keV electron PADs isotropize to a previously assumed level within 6 hr of reaching the limit, near-identically across all 70 storms, consistent with rapid pitch angle scattering due to chorus wave interactions. In around 30% of events, 54 keV electrons completely exceed the KP limit, before being quickly subdued. 470 and 749 keV PADs show clear indications of an upper limit, though less aligned with the calculated limit used here. The consistency of an absolute upper limit shown across all events demonstrates the importance of this phenomena in both the limiting effect on electron flux and consistently influencing electron PAD evolution during geomagnetic storms. These results also highlight the need for further investigation, particularly related to the limiting of higher energy electrons