Entities mentioned:
- Joe Biden: Power, Legacy, Self-preservation
- Bruce Reed: Loyalty, Duty, Professional pride
- House Oversight Committee: Justice, Control, Righteousness
- Anita Dunn: Loyalty, Professional pride, Self-preservation
- Donald Trump: Competitive spirit, Power, Recognition
- Steve Ricchetti: Loyalty, Duty, Professional pride
- Mike Donilon: Loyalty, Professional pride, Duty
- Dr. Kevin O'Connor: Self-preservation, Professional pride, Duty
- Anthony Bernal: Self-preservation, Loyalty, Duty
- Annie Tomasini: Self-preservation, Loyalty, Duty

Article Assessment:
Credibility Score: 65/100
Bias Rating: 55/100 (Center)
Sentiment Score: 35/100
Authoritarianism Risk: 40/100 (Generally Democratic)

Bias Analysis:
The article presents a relatively balanced view, including perspectives from both Republican investigators and former Biden officials. However, there's a slight lean towards emphasizing the investigation's legitimacy and potential implications for Biden.

Key metric: Public Trust in Government

As a social scientist, I analyze that this investigation into former President Biden's cognitive abilities could significantly impact public trust in government. The probe raises questions about transparency and the fitness of elected officials, potentially eroding confidence in the political system. The involvement of high-ranking officials and their varying levels of cooperation suggest a complex interplay of loyalty, self-preservation, and institutional integrity. The use of Fifth Amendment rights by some officials may further fuel public skepticism. This investigation could have long-lasting effects on how the public perceives age and mental acuity in relation to political leadership, potentially influencing future elections and policy discussions around age limits for public office.