Science Process Skills Inventory

2010 PDF 

Arnold, M. E., & Bourdeau, V. D. (2009). The Science Process Skills Inventory (SPSI). Corvallis, OR: Oregon State University 4-H Youth Development.

The inventory consists of eleven items, each representing a different skill in the science inquiry process. Youth are prompted to respond to each statement using a 4-point Likert scale indicating how often they practice each of the items when doing science: Never (1), sometimes (2), usually (3), and always (4). Recommended scoring of the SPSI is the calculation of a composite science process skills score. This is calculated by summing the individual ratings for each item. The score range for the composite score is 11-44.

The SPSI is recommended for students ages 12 and above.

Psychometric Testing Information

  • Principle component analysis using a promax rotation indicated consistency with a single factor solution for the scale.
  • Cronbach’s Alpha calculated pre-program/post-program with middle schools students attending a two-week residential summer science camp in 2007 and 2008 at Oregon State University (n = 106) revealed coefficients of .84 and .94 respectively. Split-half reliability (Spearman-Brown) was .93

The 4-H Inquiry Model- Matching Science Inquiry with Experiential Learning (PDF)

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