Can you look at the effect size of Don Feld over the years and chart the scatter plot and fit a line?

I don’t have anything to chart here.

Who is “Don Feld”?

None of the sources retrieved for this question, and none of the ESP-Nexus profiled people supplied to me, correspond to a researcher named Don Feld. The names appearing in the retrieved primary literature are Uwe Schellinger, Fotini Pallikari, Barbara A. Hayden, Bob Nunley, Matthew B. Scudiere, Sharon G. Solloway, William P. Fisher, Jr., and Storm. So I can’t identify whose effect sizes you’d like plotted.

A couple of possibilities worth naming:

  • If “Feld” is a mishearing or shorthand for a specific parapsychologist, tell me the full name (or the phenomenon they worked in) and I can check what the library holds.
  • If you meant an author whose work concerns fields (e.g. the GDV “human energy field” study, Hayden, Nunley & Scudiere, 2005 [2]), that’s a single study, not a longitudinal series by one investigator.

Why I can’t produce a scatter-plot-and-fit anyway

Two separate limits:

1. I return text, not rendered charts. I can lay out a study-by-study effect-size table in Markdown, which is what ESP-Nexus uses for comparable figures, but I don’t generate scatter plots or fitted regression lines.

2. I have no time series of effect sizes for any single named author here. Charting effect size “over the years” and fitting a trend line requires a set of dated, same-metric effect-size points for one investigator. The retrieved excerpts don’t provide that for anyone — they’re a mix of non-comparable measures (Spearman correlations in [1], paired-t significance flags in [2], a MicroPK funnel-plot analysis in [3], Rasch logit measures in [4], and ganzfeld meta-analytic effect sizes in [5]) across different authors and phenomena. Note this is only what these few excerpts show, not a statement about what the library holds — the underlying corpus may contain more.

What I could do instead

If you can confirm the author’s name and the phenomenon, I can:

  • pull the dated effect-size figures the library actually holds for that person, one coherent metric at a time, and
  • lay them out as a scannable per-study table (study, N, effect size, year) so the trend is visible in a column — with each figure traceable to its source.

You can also browse the audited single-study pages at Studies to find the researcher you have in mind.

References
  1. Verhältnisse, I. U. S. F. (2023). Society for Anomalistics Institute for Borderlands of Psychology and Psychohygiene Journal of Anomalistics Vol. Zeitschrift für Anomalistik / Journal of Anomalistics, 23.
  2. Barbara A. Hayden, Bob Nunley, PhD, Matther B. Scudiere (2005). A GDV Comparison of Human Energy Fields Before and After Stimulation of Shealy’s Rings of Fire, Earth, Water, Air, Crystal. Subtle Energies & Energy Medicine Journal, 16.
  3. Pallikari, F. (2023). Understanding the Nature of Psychokinesis. Zeitschrift für Anomalistik / Journal of Anomalistics, 23, 103. https://doi.org/10.23793/zfa.2023.103
  4. Sharon G. Solloway, William P., Jr. Fisher (2007). Mindfulness in Measurement: Reconsidering the Measurable in Mindfulness Practice. International Journal of Transpersonal Studies.
  5. Storm (2001). Does Psi Exist? Comments on Milton and Wiseman’s (1999) Meta-Analysis of Ganzfel. Psychological Bulletin.

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